{"id":68646,"date":"2026-10-20T04:36:38","date_gmt":"2026-10-19T19:36:38","guid":{"rendered":"https:\/\/phys-edu.net\/wp\/?p=68646"},"modified":"2026-10-20T04:36:38","modified_gmt":"2026-10-19T19:36:38","slug":"que-manchas-elimina-un-limpiador-acido-y-como-lo-logra-la-ciencia-de-la-limpieza","status":"publish","type":"post","link":"https:\/\/phys-edu.net\/wp\/?p=68646&lang=es","title":{"rendered":"\u00bfQu\u00e9 manchas elimina un limpiador \u00e1cido y c\u00f3mo lo logra? (La ciencia de la limpieza)"},"content":{"rendered":"<p style=\"text-align: center;\"><span style=\"color: #339966;\"><strong>Soy Ken Kuwako, entrenador de ciencia. Para m\u00ed, cada d\u00eda es un experimento.<\/strong><\/span><\/p>\n<p>Aqu\u00ed tienes el resumen de art\u00edculos sobre la ciencia de la limpieza.<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"Fdg7q8nblY\"><p><a href=\"https:\/\/phys-edu.net\/wp\/?p=60013\">\u6c5a\u308c\u306f\u300c\u843d\u3068\u3059\u300d\u306e\u3067\u306f\u306a\u304f\u300c\u5909\u8eab\u300d\u3055\u305b\u308b\uff01\uff1f\u6d17\u5264\u306e\u9a5a\u7570\u306e\u5316\u5b66\uff08\u304a\u6383\u9664\u306e\u5316\u5b66\uff09<\/a><\/p><\/blockquote>\n<p><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"\u201c\u6c5a\u308c\u306f\u300c\u843d\u3068\u3059\u300d\u306e\u3067\u306f\u306a\u304f\u300c\u5909\u8eab\u300d\u3055\u305b\u308b\uff01\uff1f\u6d17\u5264\u306e\u9a5a\u7570\u306e\u5316\u5b66\uff08\u304a\u6383\u9664\u306e\u5316\u5b66\uff09\u201d \u2014 \u79d1\u5b66\u306e\u30cd\u30bf\u5e33\" src=\"https:\/\/phys-edu.net\/wp\/?p=60013&amp;embed=true#?secret=O9HkGHtMpg#?secret=Fdg7q8nblY\" data-secret=\"Fdg7q8nblY\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<p>Seguro que has o\u00eddo hablar de \u00e1cidos y \u00e1lcalis. &#8220;\u00c1lcali&#8221; es el nombre que se da a las bases cuando est\u00e1n disueltas en agua. Entre las sustancias b\u00e1sicas (alcalinas) que usamos para limpiar, la m\u00e1s potente es el hidr\u00f3xido de sodio. Entre las m\u00e1s seguras est\u00e1n <strong>el bicarbonato de sodio (pH 8,2 a 8,4), el carbonato de sodio (pH 11 a 12) y el sesquicarbonato de sodio (pH de alrededor de 9,8; piensa en \u00e9l como una mezcla de bicarbonato y carbonato de sodio)<\/strong>, entre otras.<\/p>\n<h2>Detergentes \u00e1cidos (manchas de sarro)<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-60221 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-08-5.17.01.jpeg\" alt=\"\" width=\"340\" height=\"405\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-08-5.17.01.jpeg 1084w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-08-5.17.01-252x300.jpeg 252w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-08-5.17.01-860x1024.jpeg 860w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-08-5.17.01-768x914.jpeg 768w\" sizes=\"auto, (max-width: 340px) 100vw, 340px\" \/><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/amzn.to\/4r3I4on\">Amazon: \u00e1cido c\u00edtrico<\/a><\/p>\n<p data-path-to-node=\"15\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-60215 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-08-5.03.01.jpeg\" alt=\"\" width=\"300\" height=\"370\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-08-5.03.01.jpeg 858w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-08-5.03.01-243x300.jpeg 243w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-08-5.03.01-829x1024.jpeg 829w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-08-5.03.01-768x949.jpeg 768w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p style=\"text-align: center;\" data-path-to-node=\"15\"><a href=\"https:\/\/amzn.to\/4r3I4on\">\u00c1cido c\u00edtrico<\/a><\/p>\n<p style=\"text-align: center;\" data-path-to-node=\"15\">La versi\u00f3n en polvo sale m\u00e1s econ\u00f3mica. Disu\u00e9lvela en agua antes de usarla.<\/p>\n<p>Muchas de las manchas m\u00e1s rebeldes tienen algo en com\u00fan: <strong>cuestan mucho de disolver en agua<\/strong>. El ejemplo t\u00edpico son esas manchas blancas que aparecen en el espejo del ba\u00f1o, lo que conocemos como sarro o cal. Se les llama &#8220;manchas met\u00e1licas&#8221;, y se refieren a sales de calcio, sales de magnesio, \u00f3xidos de hierro y otros compuestos poco solubles en agua. Por cierto, los profesionales de la limpieza llaman a este sarro &#8220;scale&#8221; (incrustaci\u00f3n).<\/p>\n<p>El agua del grifo lleva disueltos, en peque\u00f1as cantidades, minerales como los iones de calcio y de magnesio. Cuando una gota de agua se evapora, solo el agua se convierte en gas y se escapa al aire, mientras que el carbonato de calcio y el carbonato de magnesio se quedan atr\u00e1s en forma de cristales. Esa es la verdadera identidad de las manchas blancas con aspecto de escamas. En casa, el sarro se acumula con facilidad dentro de la tetera el\u00e9ctrica, en el espejo del ba\u00f1o, en la salida de agua del inodoro y en lugares parecidos.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-60536 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-15-5.08.31.jpeg\" alt=\"\" width=\"355\" height=\"454\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-15-5.08.31.jpeg 1064w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-15-5.08.31-235x300.jpeg 235w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-15-5.08.31-801x1024.jpeg 801w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-15-5.08.31-768x982.jpeg 768w\" sizes=\"auto, (max-width: 355px) 100vw, 355px\" \/><\/p>\n<p style=\"text-align: center;\">Este es el sarro de un espejo. Por mucho que lo frotes con un detergente neutro, no sale.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-67053 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-31-19.59.40.jpeg\" alt=\"\" width=\"369\" height=\"267\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-31-19.59.40.jpeg 994w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-31-19.59.40-300x217.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-31-19.59.40-768x555.jpeg 768w\" sizes=\"auto, (max-width: 369px) 100vw, 369px\" \/><\/p>\n<p style=\"text-align: center;\">Sarro del inodoro. Est\u00e1 duro como una piedra y es dificil\u00edsimo de quitar.<\/p>\n<p>Con el hierro pasa algo curioso. Disuelto en el agua est\u00e1 como ion ferroso Fe2+, que es incoloro. Pero al oxidarse se convierte en ion f\u00e9rrico Fe3+, de color marr\u00f3n rojizo y mucho menos soluble. Y cuando llega a ser \u00f3xido de hierro (III), Fe2O3, lo que llamamos herrumbre, ya no se disuelve en agua en absoluto.<\/p>\n<h3>Los \u00e1cidos tambi\u00e9n tienen sus puntos fuertes y d\u00e9biles: conviene conocer cada tipo<\/h3>\n<p>Para limpiar manchas se usan mucho los &#8220;\u00e1cidos&#8221;. <span style=\"font-size: 14px;\">La clave qu\u00edmica aqu\u00ed es la reacci\u00f3n de neutralizaci\u00f3n y descomposici\u00f3n entre un \u00e1cido y un carbonato alcalino.<\/span> El carbonato de calcio, componente principal del sarro, es qu\u00edmicamente una sal de car\u00e1cter ligeramente alcalino. Si le a\u00f1adimos una sustancia \u00e1cida como el \u00e1cido c\u00edtrico o el \u00e1cido ac\u00e9tico, se descompone mediante una reacci\u00f3n como esta:<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-67177\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-09-05-7.21.51.jpeg\" alt=\"\" width=\"304\" height=\"32\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-09-05-7.21.51.jpeg 682w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-09-05-7.21.51-300x32.jpeg 300w\" sizes=\"auto, (max-width: 304px) 100vw, 304px\" \/><\/p>\n<p class=\"p1\">Cuando el carbonato de calcio reacciona con un \u00e1cido, se transforma en iones de calcio (que se disuelven f\u00e1cilmente en agua), agua y burbujas de di\u00f3xido de carbono. El sarro, que era un s\u00f3lido, pasa a una forma soluble, y por eso ya se puede enjuagar.<\/p>\n<p style=\"padding-left: 40px;\">El experimento m\u00e1s famoso de este tipo es dejar un huevo crudo en vinagre. La c\u00e1scara (carbonato de calcio) se disuelve y queda un &#8220;huevo esqueleto&#8221; (huevo de vinagre), transparente, blandito y que rebota.<\/p>\n<p><iframe loading=\"lazy\" title=\"\u3010\u5b9f\u9a13\u52d5\u753b\u3011\u30b9\u30b1\u30eb\u30c8\u30f3\u305f\u307e\u3054\u3092\u4f5c\u3063\u3066\u307f\u3088\u3046\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/rRONv4tyjik?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\n<li class=\"Z1qcYe\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-hveid=\"CAIIAAgACAYQFQ\" data-copy-service-computed-style=\"font-family: Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px 0px 12px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\"><span class=\"iNqyIf\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-copy-service-computed-style=\"font-family: Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\">Pon un huevo crudo en un recipiente y c\u00fabrelo generosamente con vinagre.<!--TgQPHd|||[]--><\/span><!--TgQPHd|||[]--><\/li>\n<li class=\"Z1qcYe\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-hveid=\"CAIIAAgACAYQFg\" data-copy-service-computed-style=\"font-family: Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px 0px 12px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\"><span class=\"iNqyIf\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-copy-service-computed-style=\"font-family: Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\">Tapa el recipiente sin apretar o c\u00fabrelo con film transparente, y d\u00e9jalo en la nevera o en un lugar fresco y oscuro durante <strong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-copy-service-computed-style=\"font-family: Arial, sans-serif; font-size: 16px; font-weight: 700; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\">2 o 3 d\u00edas<!--TgQPHd|||[]--><\/strong>.<!--TgQPHd|||[]--><\/span><!--TgQPHd|||[]--><\/li>\n<li class=\"Z1qcYe\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-hveid=\"CAIIAAgACAYQFw\" data-copy-service-computed-style=\"font-family: Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px 0px 12px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\"><span class=\"iNqyIf\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-copy-service-computed-style=\"font-family: Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\">Cuando la c\u00e1scara se haya disuelto, s\u00e1calo y enjuaga con suavidad, bajo un chorro de agua muy flojo, los restos de la fin\u00edsima membrana de la superficie.<\/span><\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<p style=\"padding-left: 40px;\">El carbonato de calcio, componente principal de la c\u00e1scara del huevo, reacciona con el \u00e1cido ac\u00e9tico del vinagre y la c\u00e1scara se va disolviendo mientras libera burbujas de di\u00f3xido de carbono.<\/p>\n<p>Eso s\u00ed, no todos los \u00e1cidos disuelven las manchas de la misma manera. Seg\u00fan el tipo de \u00e1cido, hay <b>manchas que s\u00ed puede disolver y otras que no<\/b>, as\u00ed que es importante conocer las caracter\u00edsticas de cada uno.<\/p>\n<h4>El \u00e1cido clorh\u00eddrico es un todoterreno; el \u00e1cido ac\u00e9tico y el c\u00edtrico flaquean un poco en algunos casos<\/h4>\n<p>El \u00e1cido clorh\u00eddrico, por ejemplo, disuelve muy bien tanto el <b>hidr\u00f3xido de hierro (III)<\/b> como el <b>carbonato de calcio<\/b>, que es el responsable de esas manchas blancas de las zonas h\u00famedas de la casa.<\/p>\n<p><strong>El \u00e1cido c\u00edtrico es un \u00e1cido org\u00e1nico seguro.<\/strong> Se le da de maravilla disolver el carbonato de calcio, pero no tiene tanta fuerza con el hidr\u00f3xido de hierro (III). Adem\u00e1s, si no se enjuaga enseguida con agua despu\u00e9s de usarlo, la suciedad puede volver a precipitar. Si limpias con \u00e1cido c\u00edtrico y lo dejas actuando mucho tiempo, puede formarse <b>citrato de calcio<\/b>, una sal insoluble (es decir, que casi no se disuelve en agua). Entonces la mancha se convierte en algo a\u00fan m\u00e1s dif\u00edcil de eliminar que la que acabas de disolver. Por eso, al limpiar con \u00e1cido c\u00edtrico, la clave es <b>no dejarlo actuar demasiado y enjuagar a fondo<\/b>.<\/p>\n<p style=\"text-align: right;\">Referencia: &#8220;<a href=\"https:\/\/link.amazon\/B0dAg7xFE\">Fundamentos y mecanismos de la limpieza y los detergentes<\/a>&#8221; (Shuwa System)<\/p>\n<p><strong>El \u00e1cido ac\u00e9tico tambi\u00e9n es un \u00e1cido org\u00e1nico seguro.<\/strong> Funciona bien contra el sarro de calcio, pero es poco eficaz contra las manchas de hierro, as\u00ed que se parece bastante al \u00e1cido c\u00edtrico. En la limpieza natural se usa a veces el vinagre por este motivo.<\/p>\n<p>Por otro lado, cuando el \u00e1cido sulf\u00farico se une al calcio, forma sulfato de calcio, una sustancia que <strong>apenas se disuelve en agua<\/strong>. Por eso, <strong>el \u00e1cido sulf\u00farico no es adecuado para eliminar manchas de calcio ni de magnesio<\/strong>. En lugar de disolver la suciedad, podr\u00edas acabar creando una sustancia todav\u00eda m\u00e1s dif\u00edcil de quitar.<\/p>\n<h3>\u00bfC\u00f3mo se elimina el carbonato de calcio? \u00a1Ve\u00e1moslo con f\u00f3rmulas qu\u00edmicas!<\/h3>\n<p>El carbonato de calcio, componente principal del sarro, tiene un car\u00e1cter m\u00e1s bien alcalino. Al echarle encima un detergente \u00e1cido (\u00e1cido c\u00edtrico), se produce esta reacci\u00f3n de neutralizaci\u00f3n:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-60001 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-04-6.36.05.jpeg\" alt=\"\" width=\"328\" height=\"41\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-04-6.36.05.jpeg 704w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-04-6.36.05-300x38.jpeg 300w\" sizes=\"auto, (max-width: 328px) 100vw, 328px\" \/><\/p>\n<p data-path-to-node=\"10\">F\u00edjate bien en c\u00f3mo queda el lado derecho, el de &#8220;despu\u00e9s de la reacci\u00f3n&#8221;.<\/p>\n<ul data-path-to-node=\"11\">\n<li>\n<p data-path-to-node=\"11,0,0\"><b data-path-to-node=\"11,0,0\" data-index-in-node=\"0\">Iones de calcio:<\/b> se encuentran disueltos en el agua.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"11,1,0\"><b data-path-to-node=\"11,1,0\" data-index-in-node=\"0\">Agua:<\/b> l\u00edquida, por supuesto.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"11,2,0\"><b data-path-to-node=\"11,2,0\" data-index-in-node=\"0\">Di\u00f3xido de carbono:<\/b> se escapa en forma de burbujas (gas) con ese burbujeo tan caracter\u00edstico.<\/p>\n<\/li>\n<\/ul>\n<p data-path-to-node=\"12\">En otras palabras, <b data-path-to-node=\"12\" data-index-in-node=\"4\">un &#8220;s\u00f3lido insoluble en agua&#8221; se transforma, en el mismo instante en que reacciona, en &#8220;componentes que s\u00ed se disuelven en agua&#8221; y &#8220;gas&#8221;<\/b>. Con una ecuaci\u00f3n qu\u00edmica se escribe as\u00ed (por ejemplo, <strong>usando \u00e1cido ac\u00e9tico<\/strong>):<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-60000 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-04-6.27.52.jpeg\" alt=\"\" width=\"488\" height=\"33\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-04-6.27.52.jpeg 998w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-04-6.27.52-300x20.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-04-6.27.52-768x52.jpeg 768w\" sizes=\"auto, (max-width: 488px) 100vw, 488px\" \/><\/p>\n<p>Como resultado de esta reacci\u00f3n, el dur\u00edsimo carbonato de calcio se convierte en <strong>acetato de calcio, una &#8220;sal que se disuelve muy bien en agua&#8221;<\/strong>. Como <strong>lo que estaba compacto y pegado se deshace en iones que se disuelven en el agua<\/strong>, basta con enjuagar con la ducha para que salga.<\/p>\n<p data-path-to-node=\"15\">\u3000El carbonato de calcio se va con el \u00e1cido porque este rompe qu\u00edmicamente los enlaces de la &#8220;piedra&#8221; y la convierte en otras sustancias que el agua puede arrastrar. Por eso, aunque se trate de algo que apenas se disuelve en agua, con un \u00e1cido se puede ir desgastando poco a poco desde la superficie.<\/p>\n<p data-path-to-node=\"15\">Esto es el carbonato de calcio, convertido en una aut\u00e9ntica piedra, que se hab\u00eda acumulado en la zona donde nos lavamos las manos del inodoro de mi casa.<\/p>\n<p data-path-to-node=\"15\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-67054 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-31-19.59.40-1.jpeg\" alt=\"\" width=\"375\" height=\"271\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-31-19.59.40-1.jpeg 994w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-31-19.59.40-1-300x217.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-31-19.59.40-1-768x555.jpeg 768w\" sizes=\"auto, (max-width: 375px) 100vw, 375px\" \/><\/p>\n<p data-path-to-node=\"15\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-67057 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-09-01-4.12.56.jpeg\" alt=\"\" width=\"373\" height=\"283\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-09-01-4.12.56.jpeg 1066w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-09-01-4.12.56-300x227.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-09-01-4.12.56-1024x776.jpeg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-09-01-4.12.56-768x582.jpeg 768w\" sizes=\"auto, (max-width: 373px) 100vw, 373px\" \/><\/p>\n<p data-path-to-node=\"15\">Prepara una soluci\u00f3n de \u00e1cido c\u00edtrico muy concentrada, empapa con ella papel de cocina y envuelve la mancha d\u00e1ndole varias vueltas. Lo dej\u00e9 actuar durante una hora.<\/p>\n<p data-path-to-node=\"15\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-67059 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-09-01-4.13.24.jpeg\" alt=\"\" width=\"375\" height=\"358\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-09-01-4.13.24.jpeg 676w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-09-01-4.13.24-300x287.jpeg 300w\" sizes=\"auto, (max-width: 375px) 100vw, 375px\" \/><\/p>\n<p data-path-to-node=\"15\">As\u00ed qued\u00f3 despu\u00e9s de una hora.<\/p>\n<p data-path-to-node=\"15\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-67056 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-31-19.59.58.jpeg\" alt=\"\" width=\"405\" height=\"295\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-31-19.59.58.jpeg 1310w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-31-19.59.58-300x219.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-31-19.59.58-1024x747.jpeg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-31-19.59.58-768x560.jpeg 768w\" sizes=\"auto, (max-width: 405px) 100vw, 405px\" \/><\/p>\n<p data-path-to-node=\"15\">\u00a1Ha salido bastante carbonato de calcio (la &#8220;piedra&#8221;)! Ahora lo froto con suavidad con una esponja de las que se usan para el sarro.<\/p>\n<p data-path-to-node=\"15\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-67058 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-09-01-4.13.02.jpeg\" alt=\"\" width=\"413\" height=\"383\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-09-01-4.13.02.jpeg 1230w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-09-01-4.13.02-300x278.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-09-01-4.13.02-1024x949.jpeg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-09-01-4.13.02-768x712.jpeg 768w\" sizes=\"auto, (max-width: 413px) 100vw, 413px\" \/><\/p>\n<p data-path-to-node=\"15\">\u00a1Ha quedado impecable!<\/p>\n<p style=\"text-align: center;\" data-path-to-node=\"15\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-67055\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-31-19.59.47.jpeg\" alt=\"\" width=\"421\" height=\"295\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-31-19.59.47.jpeg 978w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-31-19.59.47-300x210.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-08-31-19.59.47-768x539.jpeg 768w\" sizes=\"auto, (max-width: 421px) 100vw, 421px\" \/><\/p>\n<p data-path-to-node=\"15\">Para las escamas de sarro del espejo del ba\u00f1o, te recomiendo un pad de pulido de diamante de los que venden en las tiendas de 100 yenes. Primero, \u00fasalo para eliminar por la v\u00eda f\u00edsica las escamas m\u00e1s grandes,<\/p>\n<p style=\"text-align: center;\" data-path-to-node=\"15\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-68627\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-10-19-5.00.54.jpeg\" alt=\"\" width=\"317\" height=\"294\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-10-19-5.00.54.jpeg 1050w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-10-19-5.00.54-300x278.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-10-19-5.00.54-1024x950.jpeg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-10-19-5.00.54-768x712.jpeg 768w\" sizes=\"auto, (max-width: 317px) 100vw, 317px\" \/><\/p>\n<p data-path-to-node=\"15\">y despu\u00e9s pega encima papel de cocina empapado en una soluci\u00f3n concentrada de \u00e1cido c\u00edtrico, d\u00e9jalo actuar y acl\u00e1ralo con agua al final. Ver\u00e1s que el espejo queda reluciente.<\/p>\n<p data-path-to-node=\"15\">Antes<\/p>\n<p data-path-to-node=\"15\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-60536 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-15-5.08.31.jpeg\" alt=\"\" width=\"355\" height=\"454\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-15-5.08.31.jpeg 1064w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-15-5.08.31-235x300.jpeg 235w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-15-5.08.31-801x1024.jpeg 801w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-15-5.08.31-768x982.jpeg 768w\" sizes=\"auto, (max-width: 355px) 100vw, 355px\" \/><\/p>\n<p data-path-to-node=\"15\">Despu\u00e9s<\/p>\n<p data-path-to-node=\"15\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-68628 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-10-19-5.00.49.jpeg\" alt=\"\" width=\"351\" height=\"465\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-10-19-5.00.49.jpeg 958w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-10-19-5.00.49-227x300.jpeg 227w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-10-19-5.00.49-774x1024.jpeg 774w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-10-19-5.00.49-768x1017.jpeg 768w\" sizes=\"auto, (max-width: 351px) 100vw, 351px\" \/><\/p>\n<h3 dir=\"ltr\">El peligro de los \u00e1cidos fuertes: la &#8220;desnaturalizaci\u00f3n&#8221; de las prote\u00ednas<\/h3>\n<p dir=\"ltr\">Los \u00e1lcalis fuertes, como el hidr\u00f3xido de sodio, dan miedo porque saponifican las grasas y rompen las prote\u00ednas por hidr\u00f3lisis hasta disolverlas. Pero \u00bfqu\u00e9 tiene de peligroso un \u00e1cido fuerte como el \u00e1cido clorh\u00eddrico?<\/p>\n<p dir=\"ltr\">Un \u00e1cido fuerte libera una enorme cantidad de iones de hidr\u00f3geno (H\u207a), y estos destruyen los puentes de hidr\u00f3geno y el equilibrio de cargas que mantienen la estructura tridimensional de las mol\u00e9culas de prote\u00edna. Como resultado, la prote\u00edna pierde su estructura original (su forma tridimensional) y se desnaturaliza.<\/p>\n<p dir=\"ltr\">Es parecido a lo que ocurre con el <strong>huevo escalfado<\/strong>, donde <strong>la clara cuaja al echarle vinagre al agua<\/strong>, solo que aqu\u00ed les pasa a las prote\u00ednas de la piel. Una prote\u00edna desnaturalizada pierde su funci\u00f3n y se endurece. Esa es la verdadera naturaleza de una quemadura qu\u00edmica por \u00e1cido clorh\u00eddrico.<\/p>\n<p dir=\"ltr\" style=\"padding-left: 40px;\"><span style=\"font-size: 14px;\">Dato extra: las quemaduras por \u00e1cido provocan un tipo de lesi\u00f3n llamada &#8220;necrosis por coagulaci\u00f3n&#8221;. Las prote\u00ednas se desnaturalizan y forman una especie de costra endurecida, y esa capa frena hasta cierto punto la penetraci\u00f3n de m\u00e1s \u00e1cido. Por eso, comparadas con las quemaduras de \u00e1lcalis (como el hidr\u00f3xido de sodio), las de \u00e1cido suelen quedarse en zonas relativamente superficiales, incluso con productos qu\u00edmicos igual de potentes. (Los \u00e1lcalis, en cambio, provocan una &#8220;necrosis por licuefacci\u00f3n&#8221;: van disolviendo grasas y prote\u00ednas y penetrando cada vez m\u00e1s hondo, por lo que tienden a avanzar con mayor profundidad).<\/span><\/p>\n<p dir=\"ltr\">Si llegas a tocarlo, lo que hay que hacer es <strong>&#8220;lavar con abundante agua corriente, sin parar&#8221;<\/strong>. Intentar neutralizarlo ech\u00e1ndole otra sustancia (por ejemplo, agua con bicarbonato) no se recomienda, porque la propia reacci\u00f3n de neutralizaci\u00f3n desprende calor y podr\u00eda empeorar la quemadura. Lo importante es arrastrar el producto con agua corriente mientras se va diluyendo y acudir cuanto antes a un centro m\u00e9dico.<\/p>\n<h3>Contacto y solicitudes<\/h3>\n<p>\u00a1Que la magia y la curiosidad de la ciencia est\u00e9n m\u00e1s cerca de ti! Aqu\u00ed recopilo, de forma sencilla, experimentos cient\u00edficos divertidos que puedes hacer en casa, junto con los trucos para que te salgan bien. \u00a1An\u00edmate a explorar!<br \/>\n\u30fbEl contenido de mi cuaderno de ideas cient\u00edficas (&#8220;Kagaku no Netach\u014d&#8221;) se ha convertido en libro. M\u00e1s informaci\u00f3n <a href=\"https:\/\/amzn.to\/42PMCEL\">aqu\u00ed<\/a>.<br \/>\n\u30fbSobre Ken Kuwako, el autor del blog, puedes leer <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=37\">aqu\u00ed<\/a>.<br \/>\n\u30fbPara encargos (redacci\u00f3n, conferencias, talleres de experimentos, asesor\u00eda y participaci\u00f3n en TV, etc.), escribe <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">aqu\u00ed<\/a>.<br \/>\n<span class=\"s2\">\u30fb\u00a1Las novedades de los art\u00edculos se publican en <a href=\"https:\/\/x.com\/kuwako\">X<\/a>!<\/span><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/www.youtube.com\/user\/kkuwako\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-35048\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/03\/3d9640dad7bc5538e76f92da1966ee19.jpg\" alt=\"\" width=\"30\" height=\"21\" \/><\/a><a href=\"https:\/\/www.youtube.com\/user\/kkuwako?sub_confirmation=1\">\u00a1En el canal Kagaku no Neta (el canal de ideas cient\u00edficas) publicamos v\u00eddeos de experimentos!<\/a><\/p>\n<h3>\uff11\uff10\u6708\u306e\u30a4\u30c1\u30aa\u30b7\u5b9f\u9a13\uff01<\/h3>\r\n<p style=\"text-align: center;\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=67937\">\u7d19\u30b3\u30c3\u30d7\u30b8\u30e3\u30a4\u30ed\u98db\u884c\u6a5f\u3092\u4f5c\u308d\u3046\uff01<\/a><\/p>\r\n<p style=\"text-align: center;\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=67937\"><img class=\"alignnone  wp-image-68171\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/10\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2026-10-06-8.34.43.jpeg\" sizes=\"auto, (max-width: 1188px) 100vw, 1188px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/10\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-10-06-8.34.43.jpeg 1188w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/10\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-10-06-8.34.43-300x171.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/10\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-10-06-8.34.43-1024x584.jpeg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/10\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-10-06-8.34.43-768x438.jpeg 768w\" alt=\"\" width=\"397\" height=\"226\" \/><\/a><\/p>\r\n<h3 style=\"text-align: left;\"><span style=\"font-size: medium;\"><b><strong>\u30c6\u30ec\u30d3\u756a\u7d44\u76e3\u4fee\u30fb\u30a4\u30d9\u30f3\u30c8\u7b49\u306e\u304a\u77e5\u3089\u305b<\/strong><\/b><\/span><\/h3>\r\n<ul>\r\n<li>10\u670827\u65e5\uff08\u706b\uff09 \u30c6\u30ec\u30d3\u76e3\u4fee\u756a\u7d44\u653e\u9001\u4e88\u5b9a<\/li>\r\n<li>11\u670827\u65e5\uff08\u91d1\uff09\u3000\u30c6\u30ec\u30d3\u76e3\u4fee\u756a\u7d44\u653e\u9001\u4e88\u5b9a<\/li>\r\n<li>12\u670826\u65e5\uff08\u571f\uff09\u3000<a href=\"https:\/\/phys-edu.net\/wp\/?p=64825\">\u30ca\u30ea\u30ab\u30b5\u30a4\u30a8\u30f3\u30b9\u30a2\u30ab\u30c7\u30df\u30fc\uff08\u6559\u54e1\u5411\u3051\u5b9f\u9a13\u8b1b\u7fd2\u4f1a\uff09\u958b\u50ac<\/a><\/li>\r\n<\/ul>\r\n<h3><b>\u66f8\u7c4d<strong>\u306e\u304a\u77e5\u3089\u305b<\/strong><\/b><\/h3>\r\n<ul>\r\n<li>\u300e<a href=\"https:\/\/phys-edu.net\/wp\/?p=64462\">\u9ad8\u6821\u5165\u8a66 \u5206\u89e3\u554f\u984c\u96c6 \u7406\u79d1<\/a>\u300f\uff08\u5b66\u7814\uff09\u2026\u96e3\u3057\u3044\u554f\u984c\u3082\u5c0f\u3055\u306a\u554f\u984c\u306b\u5206\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u554f\u984c\u3092\u89e3\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305d\u3093\u306a\u5206\u89e3\u306e\u6280\u8853\u304c\u8eab\u306b\u3064\u304f\u3088\u3046\u306b\u6df1\u304f\u95a2\u308f\u308a\u3092\u6301\u3063\u3066\u4f5c\u308a\u307e\u3057\u305f\u3002<br \/><a href=\"https:\/\/phys-edu.net\/wp\/?p=64462\"><img class=\"alignnone  wp-image-65097 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-07-04-8.40.17.jpeg\" alt=\"\" width=\"172\" height=\"244\" \/><\/a>\u300e\u5927\u4eba\u306e\u305f\u3081\u306e\u9ad8\u6821\u7269\u7406\u5fa9\u7fd2\u5e33\u300f\uff08\u8b1b\u8ac7\u793e\uff09\u2026\u4e00\u822c\u5411\u3051\u306b\u65e5\u5e38\u306e\u7269\u7406\u306b\u3064\u3044\u3066\u516c\u5f0f\u3092\u5143\u306b\u7d10\u89e3\u304d\u307e\u3057\u305f\u3002<a href=\"https:\/\/phys-edu.net\/wp\/?p=1827\">\u7279\u8a2d\u30b5\u30a4\u30c8<\/a>\u3067\u306f\u5b9f\u9a13\u3092\u591a\u6570\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002<strong>\u203b\u5897\u5237\u304c\u304b\u304b\u308a\uff16\u5237\u3068\u306a\u308a\u307e\u3057\u305f\uff082026\/02\/01\uff09<br \/><img class=\"alignnone wp-image-10940 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2013\/12\/0811159a99f69eeff1a357e3daed84e0-300x262.jpg\" sizes=\"(max-width: 220px) 100vw, 220px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2013\/12\/0811159a99f69eeff1a357e3daed84e0-300x262.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2013\/12\/0811159a99f69eeff1a357e3daed84e0.jpg 311w\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2014-07-05 0.43.51\" width=\"220\" height=\"192\" \/><\/strong><\/li>\r\n<li>\u300e\u304d\u3081\u308b!\u5171\u901a\u30c6\u30b9\u30c8 \u7269\u7406\u57fa\u790e \u6539\u8a02\u7248\u300f\uff08\u5b66\u7814\uff09\u2026\u3000\u9ad8\u6821\u7269\u7406\u306e\u53c2\u8003\u66f8\u3067\u3059\u3002\u30a4\u30e9\u30b9\u30c8\u3092\u591a\u304f\u3057\u3066\u30a4\u30e1\u30fc\u30b8\u304c\u6301\u3066\u308b\u3088\u3046\u306b\u63cf\u304d\u307e\u3057\u305f\u3002\u6388\u696d\u306b\u3064\u3044\u3066\u3044\u3051\u306a\u3044\u3001\u7269\u7406\u304c\u82e6\u624b\u3001\u305d\u3093\u306a\u751f\u5f92\u306b\u304a\u3059\u3059\u3081\u3067\u3059\u3002<a href=\"https:\/\/phys-edu.net\/wp\/?p=45322\">\u7279\u8a2d\u30b5\u30a4\u30c8<\/a>\u306f\u3053\u3061\u3089\u3002<br \/><img class=\"alignnone wp-image-45718 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/dc1da64a8c8d1422062b4867c0607a1c.jpg\" sizes=\"(max-width: 184px) 100vw, 184px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/dc1da64a8c8d1422062b4867c0607a1c.jpg 756w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/dc1da64a8c8d1422062b4867c0607a1c-300x269.jpg 300w\" alt=\"\" width=\"184\" height=\"165\" \/><\/li>\r\n<\/ul>\r\n<h3><span style=\"text-align: center;\">\u5404\u7a2eSNS\uff08\u66f4\u65b0\u60c5\u5831\u3092\u304a\u5c4a\u3051\uff01\uff09<\/span><\/h3>\r\n<p style=\"text-align: center;\">\u3010\u65e5\u672c\u8a9e\u3011<a style=\"text-align: center;\" href=\"https:\/\/twitter.com\/kuwako\">X(Twitter)<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/www.instagram.com\/science_seeds\/\">instagram<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/www.facebook.com\/kuwakolab\/\">Facebook<\/a>\u3000\u3010\u82f1\u8a9e\u3011<a style=\"text-align: center;\" href=\"https:\/\/bsky.app\/profile\/kagakunoneta.bsky.social\">BlueSky<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/www.threads.net\/@science_seeds?hl=ja\">Threads<\/a><\/p>\r\n<h3 style=\"text-align: center;\"><strong>Explore<\/strong><\/h3>\r\n<ul>\r\n<li><a href=\"https:\/\/phys-edu.net\/wp\/?page_id=30764\">\u697d\u3057\u3044\u5b9f\u9a13<\/a>\u2026\u304a\u5b50\u3055\u3093\u3068\u4e00\u7dd2\u306b\u5922\u4e2d\u306b\u306a\u308c\u308b\u30a4\u30c1\u30aa\u30b7\u306e\u79d1\u5b66\u5b9f\u9a13\u3092\u591a\u6570\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001\u9ad8\u6821\u7269\u7406\u306e\u7406\u89e3\u3092\u6df1\u3081\u308b\u305f\u3081\u306e\u52d5\u753b\u6559\u6750\u3082\u7528\u610f\u3057\u307e\u3057\u305f\u3002<\/li>\r\n<li><a href=\"https:\/\/phys-edu.net\/wp\/?page_id=798\">\u7406\u79d1\u306e\u6559\u6750<\/a>\u2026 \u7406\u79d1\u6559\u5e2b\u3092\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\uff01\u6388\u696d\u306e\u8cea\u3092\u9ad8\u3081\u3001\u6e96\u5099\u3092\u52b9\u7387\u5316\u3059\u308b\u305f\u3081\u306e\u9078\u308a\u3059\u3050\u308a\u306e\u6559\u6750\u3092\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\r\n<li><a href=\"https:\/\/www.youtube.com\/c\/kkuwako\">Youtube<\/a>\u2026\u79d1\u5b66\u5b9f\u9a13\u7b49\u306e\u52d5\u753b\u3092\u914d\u4fe1\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\r\n<li><a href=\"https:\/\/music.youtube.com\/playlist?list=PLoK4ZvKN9S2NgpYIochcQs0aL-vrRB_Qw\">\u79d1\u5b66\u30e9\u30b8\u30aa<\/a>\u00a0\u2026\u79d1\u5b66\u30c8\u30d4\u30c3\u30af\u3092\u307b\u307c\u6bce\u65e5\u914d\u4fe1\u4e2d\uff01AI\u6280\u8853\u3092\u99c6\u4f7f\u3057\u3066\u4f5c\u6210\u3057\u305f\u300c\u8033\u3067\u697d\u3057\u3080\u79d1\u5b66\u300d\u3092\u304a\u5c4a\u3051\u3057\u307e\u3059\u3002<\/li>\r\n<li><a href=\"http:\/\/phys-edu.net\/wp\/?page_id=20940\">\u8b1b\u6f14<\/a>\u00a0\u2026\u5168\u56fd\u5404\u5730\u3067\u5b9f\u9a13\u8b1b\u7fd2\u4f1a\u30fb\u30b5\u30a4\u30a8\u30f3\u30b9\u30b7\u30e7\u30fc\u7b49\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002<\/li>\r\n<li><a href=\"http:\/\/phys-edu.net\/wp\/?page_id=37\">About<\/a>\u00a0\u2026\u300c\u79d1\u5b66\u306e\u30cd\u30bf\u5e33\u300d\u306e\u30b3\u30f3\u30bb\u30d7\u30c8\u3084\u3001\u904b\u55b6\u8005\u3067\u3042\u308b\u6851\u5b50\u7814\u306e\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u30fb\u60f3\u3044\u3092\u307e\u3068\u3081\u3066\u3044\u307e\u3059\u3002<\/li>\r\n<li><a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">\u304a\u554f\u3044\u5408\u308f\u305b<\/a> \u2026\u5b9f\u9a13\u6559\u5ba4\u306e\u3054\u4f9d\u983c\u3001\u57f7\u7b46\u30fb\u8b1b\u6f14\u306e\u76f8\u8ac7\u3001\u79d1\u5b66\u76e3\u4fee\u7b49\u306f\u3053\u3061\u3089\u306e\u30d5\u30a9\u30fc\u30e0\u304b\u3089\u304a\u5bc4\u305b\u304f\u3060\u3055\u3044\u3002<\/li>\r\n<\/ul>\r\n","protected":false},"excerpt":{"rendered":"<p>Soy Ken Kuwako, entrenador de ciencia. Para m\u00ed, cada d\u00eda es un experimento. Aqu\u00ed tienes el resumen de art\u00edculo [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":60215,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","sns_share_botton_hide":"","vkExUnit_sns_title":"","vkexunit_cta_each_option":"","_lightning_design_setting":{"layout":"default"},"footnotes":"","jetpack_post_was_ever_published":false},"categories":[1492],"tags":[],"class_list":["post-68646","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science-es"],"jetpack-related-posts":[{"id":66610,"url":"https:\/\/phys-edu.net\/wp\/?p=66610&lang=es","url_meta":{"origin":68646,"position":0},"title":"\u00a1La mancha de sangre desapareci\u00f3! Prob\u00e9 el incre\u00edble poder del percarbonato de sodio (La ciencia de la limpieza)","author":"\u6851\u5b50 \u7814","date":"2026\u5e748\u670818\u65e5","format":false,"excerpt":"Soy Ken Kuwako, vuestro Science Trainer. \u00a1Cada d\u00eda\u2026","rel":"","context":"Science","block_context":{"text":"Science","link":"https:\/\/phys-edu.net\/wp\/?cat=1492&lang=es"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2026-08-18-5.16.05.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2026-08-18-5.16.05.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2026-08-18-5.16.05.jpeg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2026-08-18-5.16.05.jpeg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2026-08-18-5.16.05.jpeg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/08\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2026-08-18-5.16.05.jpeg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":59180,"url":"https:\/\/phys-edu.net\/wp\/?p=59180&lang=es","url_meta":{"origin":68646,"position":1},"title":"\u00bfLa pasta se convierte en ramen!? El secreto de la \u201cdeliciosa reacci\u00f3n qu\u00edmica\u201d del bicarbonato","author":"\u6851\u5b50 \u7814","date":"2026\u5e741\u670822\u65e5","format":false,"excerpt":"Soy Ken Kuwako, entrenador cient\u00edfico. Mi vida es \u2026","rel":"","context":"Science","block_context":{"text":"Science","link":"https:\/\/phys-edu.net\/wp\/?cat=1492&lang=es"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/02\/71f1938282a68d426392d7a68168c4bd.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/02\/71f1938282a68d426392d7a68168c4bd.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/02\/71f1938282a68d426392d7a68168c4bd.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/02\/71f1938282a68d426392d7a68168c4bd.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":67578,"url":"https:\/\/phys-edu.net\/wp\/?p=67578&lang=es","url_meta":{"origin":68646,"position":2},"title":"\u00a1Una mandarina azul y &#8220;mohosa&#8221; se transforma en un apetitoso amarillo!? El secreto del &#8220;papel m\u00e1gico&#8221; que fascin\u00f3 a los ni\u00f1os del jard\u00edn de infancia","author":"\u6851\u5b50 \u7814","date":"2026\u5e749\u670818\u65e5","format":false,"excerpt":"Soy Ken Kuwako, divulgador cient\u00edfico. Cada d\u00eda es\u2026","rel":"","context":"Science","block_context":{"text":"Science","link":"https:\/\/phys-edu.net\/wp\/?cat=1492&lang=es"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/09\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2026-09-17-10.17.13.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/09\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2026-09-17-10.17.13.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/09\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2026-09-17-10.17.13.jpeg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/09\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2026-09-17-10.17.13.jpeg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/09\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2026-09-17-10.17.13.jpeg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":60347,"url":"https:\/\/phys-edu.net\/wp\/?p=60347&lang=es","url_meta":{"origin":68646,"position":3},"title":"\u00a1El secreto de la reacci\u00f3n burbujeante! Aprende cambios qu\u00edmicos con \u00e1cido c\u00edtrico y bicarbonato (reacci\u00f3n endot\u00e9rmica)","author":"\u6851\u5b50 \u7814","date":"2026\u5e742\u670810\u65e5","format":false,"excerpt":"Soy Ken Kuwako, entrenador cient\u00edfico. Cada d\u00eda es\u2026","rel":"","context":"Science","block_context":{"text":"Science","link":"https:\/\/phys-edu.net\/wp\/?cat=1492&lang=es"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/04\/661cf2a4731f97ee031213fdbacbdce6.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/04\/661cf2a4731f97ee031213fdbacbdce6.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/04\/661cf2a4731f97ee031213fdbacbdce6.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/04\/661cf2a4731f97ee031213fdbacbdce6.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/04\/661cf2a4731f97ee031213fdbacbdce6.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":65857,"url":"https:\/\/phys-edu.net\/wp\/?p=65857&lang=es","url_meta":{"origin":68646,"position":4},"title":"\u00a1L\u00edquido un momento, s\u00f3lido al siguiente! El experimento del &#8220;slime misterioso&#8221; que tambi\u00e9n cambia de color","author":"\u6851\u5b50 \u7814","date":"2026\u5e747\u670828\u65e5","format":false,"excerpt":"Soy Ken Kuwako, entrenador de ciencia. Cada d\u00eda es\u2026","rel":"","context":"Science","block_context":{"text":"Science","link":"https:\/\/phys-edu.net\/wp\/?cat=1492&lang=es"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/07\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2026-07-26-5.24.37.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/07\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2026-07-26-5.24.37.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/07\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2026-07-26-5.24.37.jpeg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/07\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2026-07-26-5.24.37.jpeg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":66684,"url":"https:\/\/phys-edu.net\/wp\/?p=66684&lang=es","url_meta":{"origin":68646,"position":5},"title":"\u00bfHecho de aceite!? Probamos a fabricar jab\u00f3n casero con aceite de cocina (la qu\u00edmica de la limpieza)","author":"\u6851\u5b50 \u7814","date":"2026\u5e748\u670820\u65e5","format":false,"excerpt":"Soy Kuwako Ken, vuestro entrenador cient\u00edfico. \u00a1Ca\u2026","rel":"","context":"Science","block_context":{"text":"Science","link":"https:\/\/phys-edu.net\/wp\/?cat=1492&lang=es"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/03\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2026-03-25-20.47.12.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/03\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2026-03-25-20.47.12.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/03\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2026-03-25-20.47.12.jpeg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/03\/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88-2026-03-25-20.47.12.jpeg?resize=700%2C400&ssl=1 2x"},"classes":[]}],"jetpack_featured_media_url":"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-08-5.03.01.jpeg","_links":{"self":[{"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=\/wp\/v2\/posts\/68646","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=68646"}],"version-history":[{"count":2,"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=\/wp\/v2\/posts\/68646\/revisions"}],"predecessor-version":[{"id":68657,"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=\/wp\/v2\/posts\/68646\/revisions\/68657"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=\/wp\/v2\/media\/60215"}],"wp:attachment":[{"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=68646"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=68646"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/phys-edu.net\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=68646"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}