{"id":63431,"date":"2026-05-15T05:00:40","date_gmt":"2026-05-14T20:00:40","guid":{"rendered":"https:\/\/phys-edu.net\/wp\/?p=63431"},"modified":"2026-05-15T05:05:36","modified_gmt":"2026-05-14T20:05:36","slug":"cuidado-accidentes-en-aumento-13-claves-para-el-experimento-de-hierro-y-azufre-sin-riesgos-generacion-de-sulfuro-de-hidrogeno","status":"publish","type":"post","link":"https:\/\/phys-edu.net\/wp\/?p=63431&lang=es","title":{"rendered":"\u00a1Cuidado! Accidentes en aumento. 13 claves para el experimento de &#8220;Hierro y Azufre&#8221; sin riesgos (Generaci\u00f3n de Sulfuro de Hidr\u00f3geno)"},"content":{"rendered":"<p style=\"text-align: center;\"><strong style=\"color: #339966;\">Soy Ken Kuwako, el \u201cScience Trainer\u201d. Cada d\u00eda es un experimento nuevo.<\/strong><\/p>\n<p style=\"text-align: center;\">\u3010<a href=\"https:\/\/music.youtube.com\/watch?v=-uvvWd7Dd6M&amp;si=aR4BYrruYaOtXXG6\">\u00a1Este art\u00edculo tambi\u00e9n est\u00e1 disponible en formato radio!<\/a>\u3011<\/p>\n<p>Cuando visitas una zona de aguas termales en Jap\u00f3n, hay un olor muy particular que aparece de repente en el aire. Ese aroma parecido a \u201chuevo podrido\u201d, extra\u00f1o pero curiosamente inolvidable, proviene del <b>sulfuro de hidr\u00f3geno<\/b>. Como soy originario de Gunma, una regi\u00f3n famosa por sus onsen, para m\u00ed incluso tiene algo de nost\u00e1lgico.<\/p>\n<p>En las clases de ciencias de secundaria en Jap\u00f3n existe un experimento cl\u00e1sico: mezclar hierro y azufre y calentarlos. Adem\u00e1s de mostrar una reacci\u00f3n qu\u00edmica espectacular, tambi\u00e9n permite experimentar el olor del sulfuro de hidr\u00f3geno. Es una actividad en la que los estudiantes pueden \u201csentir\u201d la qu\u00edmica con sus propios sentidos.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-43431 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/c4ad3649d712887f292ed2d424f75155.jpg\" alt=\"\" width=\"451\" height=\"444\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/c4ad3649d712887f292ed2d424f75155.jpg 980w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/c4ad3649d712887f292ed2d424f75155-300x296.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/c4ad3649d712887f292ed2d424f75155-768x757.jpg 768w\" sizes=\"auto, (max-width: 451px) 100vw, 451px\" \/><\/p>\n<p>Sin embargo, en los \u00faltimos a\u00f1os se han producido accidentes relacionados con este experimento en distintas partes del pa\u00eds. Basta con buscar \u201csulfuro de hidr\u00f3geno noticias\u201d para encontrar numerosos casos preocupantes. A veces, un simple error como que <b>un estudiante a\u00f1ada demasiada cantidad de \u00e1cido clorh\u00eddrico sin seguir las instrucciones<\/b> puede convertirse en un problema grave de seguridad y responsabilidad docente.<\/p>\n<p>\uff1cEjemplos de accidentes\uff1e<br \/>\n\u30fb<a href=\"https:\/\/www.asahi.com\/articles\/ASV5G12W6V5GUTIL00LM.html?iref=comtop_AreaArticle_02\">Posible generaci\u00f3n de sulfuro de hidr\u00f3geno en una secundaria de Edogawa, Tokio: cinco alumnos se sintieron mal<\/a>\uff08Asahi Shimbun\uff09\uff082026\/05\/15\uff09<br \/>\n\u30fb<a href=\"https:\/\/mainichi.jp\/articles\/20250618\/k00\/00m\/040\/219000c\">\u00bfEs realmente necesario este experimento? Contin\u00faan los traslados de emergencia<\/a>\uff08Mainichi Shimbun\uff09\uff082025\/6\/19\uff09<\/p>\n<p><iframe loading=\"lazy\" title=\"\u3010\u901f\u5831\u3011\u6771\u4eac\u30fb\u6c5f\u6238\u5ddd\u533a\u306e\u533a\u7acb\u4e2d\u5b66\u6821\u3067\u786b\u5316\u6c34\u7d20\u767a\u751f\u304b\u00a0\u4e2d\u5b662\u5e74\u306e\u751f\u5f925\u4eba\u304c\u4f53\u8abf\u4e0d\u826f\u00a0\u8b66\u8996\u5e81\uff5cTBS\u00a0NEWS\u00a0DIG\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/QwMtCDEYjjs?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<p>Aun as\u00ed, sigo creyendo que este experimento tiene un enorme valor educativo. El momento en que el hierro y el azufre reaccionan y empiezan a emitir un brillo rojo intenso queda grabado para siempre en la memoria de los estudiantes.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-43416 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/19426da5591b205b2ece8931675bed21.jpg\" alt=\"\" width=\"470\" height=\"288\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/19426da5591b205b2ece8931675bed21.jpg 1826w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/19426da5591b205b2ece8931675bed21-300x184.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/19426da5591b205b2ece8931675bed21-1024x628.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/19426da5591b205b2ece8931675bed21-768x471.jpg 768w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/19426da5591b205b2ece8931675bed21-1536x942.jpg 1536w\" sizes=\"auto, (max-width: 470px) 100vw, 470px\" \/><\/p>\n<p>Adem\u00e1s, asociar \u201cese olor\u201d con \u201cun gas peligroso\u201d puede convertirse alg\u00fan d\u00eda en un conocimiento que salve vidas, ya sea en aguas termales, t\u00faneles o zonas de construcci\u00f3n. Por eso mismo, <b>este experimento debe realizarse correctamente, con extrema precauci\u00f3n y con medidas de seguridad rigurosas<\/b>.<\/p>\n<p><span style=\"color: #ff0000;\"><strong>Por muy valioso e interesante que sea para estudiantes y profesores, un experimento sin seguridad garantizada simplemente no deber\u00eda hacerse.<\/strong><\/span><\/p>\n<p>En este art\u00edculo voy a compartir los <b>13 puntos de seguridad<\/b> que reviso cada a\u00f1o antes de realizar esta pr\u00e1ctica en clase. Tambi\u00e9n dejo al final las <a href=\"https:\/\/docs.google.com\/presentation\/d\/1LQTG1xUSgCzcqpje-pH5aRT2mZaY8uQ2gHZYx7Mu648\/edit?usp=sharing\">diapositivas de seguridad<\/a> que realmente utilizo con mis alumnos. Puedes usarlas libremente.<\/p>\n<p>Antes de cada sesi\u00f3n siempre hago varias pruebas previas por mi cuenta. Hasta ahora he podido realizar este experimento sin accidentes graves, pero sinceramente, nunca dejo de sentir respeto y cierta tensi\u00f3n al hacerlo.<\/p>\n<p>\u203b A veces me preguntan si las fotos o diapositivas pueden usarse en clases. <b>Todo el material publicado aqu\u00ed puede utilizarse libremente.<\/b> Espero que ayude a crear clases m\u00e1s seguras y m\u00e1s interesantes.<\/p>\n<h2>M\u00e9todo experimental<\/h2>\n<h3>Preparaci\u00f3n previa y ventilaci\u00f3n total: la seguridad empieza antes de la clase<\/h3>\n<p>Es recomendable avisar previamente a la enfermer\u00eda escolar y al profesor tutor de que se realizar\u00e1 el experimento. En caso de emergencia, podr\u00e1n actuar r\u00e1pidamente.<\/p>\n<p>Tambi\u00e9n conviene recordar a los estudiantes que lleven bata y gafas de seguridad.<\/p>\n<p>Y aqu\u00ed va algo que muchos olvidan: el extractor de aire. El d\u00eda del experimento suele ser ca\u00f3tico, y aunque abras las ventanas, es f\u00e1cil olvidarse de encender la ventilaci\u00f3n. Por eso, acost\u00fambrate a <b>encender el extractor antes incluso de que empiece la clase<\/b>.<\/p>\n<p><span style=\"color: #ff0000;\"><b>Punto 0: avisar previamente a la enfermer\u00eda y al tutor<\/b><\/span><\/p>\n<p><span style=\"color: #ff0000;\"><b>Punto 1: encender la ventilaci\u00f3n antes de comenzar la clase<\/b><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-43425 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/46558e9fc3fd19ad59a825d8ef0d7c2c.jpg\" alt=\"\" width=\"181\" height=\"300\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/46558e9fc3fd19ad59a825d8ef0d7c2c.jpg 542w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/46558e9fc3fd19ad59a825d8ef0d7c2c-181x300.jpg 181w\" sizes=\"auto, (max-width: 181px) 100vw, 181px\" \/><\/p>\n<p style=\"text-align: center;\">Interruptor de ventilaci\u00f3n de nuestra escuela<\/p>\n<h3>Paso 1: mezclar correctamente hierro y azufre (7,0 g de hierro y 4,0 g de azufre)<\/h3>\n<p>Para terminar el experimento dentro de una clase de 50 minutos, <b>el profesor debe preparar previamente las cantidades<\/b>.<\/p>\n<p>Especialmente importante: <b>si hay demasiado azufre, aumentar\u00e1 la producci\u00f3n de vapor de azufre<\/b>, algo directamente relacionado con la seguridad.<\/p>\n<p>Tambi\u00e9n importa mucho el tama\u00f1o de las part\u00edculas de hierro. Con polvo demasiado grueso, la reacci\u00f3n puede fallar. Lo recomendable es usar hierro de <b>100 mesh o superior<\/b>. En esta ocasi\u00f3n utilic\u00e9 300 mesh.<\/p>\n<p>Cuanto m\u00e1s fino es el polvo, mayor es el \u00e1rea de contacto entre el hierro y el azufre, haciendo que la reacci\u00f3n sea m\u00e1s uniforme y estable.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-43406 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/9b4235098d18f9cf8bedbbf46bf3b7bc.jpg\" alt=\"\" width=\"421\" height=\"299\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/9b4235098d18f9cf8bedbbf46bf3b7bc.jpg 1154w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/9b4235098d18f9cf8bedbbf46bf3b7bc-300x213.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/9b4235098d18f9cf8bedbbf46bf3b7bc-1024x728.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/9b4235098d18f9cf8bedbbf46bf3b7bc-768x546.jpg 768w\" sizes=\"auto, (max-width: 421px) 100vw, 421px\" \/><\/p>\n<p style=\"text-align: center;\"><span style=\"color: #ff0000;\"><b>Punto 2: usar hierro de al menos 100 mesh<\/b><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-43408 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/58641c75b470a3a591d52f600dc12fb4.jpg\" alt=\"\" width=\"178\" height=\"293\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/58641c75b470a3a591d52f600dc12fb4.jpg 892w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/58641c75b470a3a591d52f600dc12fb4-182x300.jpg 182w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/58641c75b470a3a591d52f600dc12fb4-622x1024.jpg 622w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/58641c75b470a3a591d52f600dc12fb4-768x1264.jpg 768w\" sizes=\"auto, (max-width: 178px) 100vw, 178px\" \/><\/p>\n<p>Mezcla bien el hierro y el azufre en un mortero.<\/p>\n<p>Lo ideal es tener un mortero exclusivo para sulfuro de hierro y otro para \u00f3xido de cobre, as\u00ed no hace falta lavarlos entre clases.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-43405 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/3468b7ad0a35d4b8779b73efa0c565bc.jpg\" alt=\"\" width=\"433\" height=\"451\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/3468b7ad0a35d4b8779b73efa0c565bc.jpg 1044w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/3468b7ad0a35d4b8779b73efa0c565bc-288x300.jpg 288w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/3468b7ad0a35d4b8779b73efa0c565bc-984x1024.jpg 984w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/3468b7ad0a35d4b8779b73efa0c565bc-768x799.jpg 768w\" sizes=\"auto, (max-width: 433px) 100vw, 433px\" \/><\/p>\n<p>La mezcla debe quedar completamente gris. Si todav\u00eda se ven grumos amarillos de azufre, la reacci\u00f3n ser\u00e1 irregular y el azufre sobrante se evaporar\u00e1.<\/p>\n<p><span style=\"color: #ff0000;\"><b>Punto 3: mezclar muy bien. Si la reacci\u00f3n no ocurre correctamente, aparecer\u00e1 vapor de azufre<\/b><\/span><\/p>\n<p style=\"text-align: center;\"><b>Dato curioso: el azufre se funde a 112 \u2103 y hierve a 446 \u2103. La llama del mechero supera los 1500 \u2103.<\/b><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-43407 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/90d75ee02783c21f29e5d45c07f257b3.jpg\" alt=\"\" width=\"260\" height=\"251\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/90d75ee02783c21f29e5d45c07f257b3.jpg 1128w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/90d75ee02783c21f29e5d45c07f257b3-300x290.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/90d75ee02783c21f29e5d45c07f257b3-1024x990.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/90d75ee02783c21f29e5d45c07f257b3-768x742.jpg 768w\" sizes=\"auto, (max-width: 260px) 100vw, 260px\" \/><\/p>\n<p style=\"text-align: center;\"><b>Este es un ejemplo de mala mezcla.<\/b> Todav\u00eda se ven grumos amarillos. <span style=\"color: #ff0000;\"><strong>Hay que seguir mezclando hasta que todo quede gris.<\/strong><\/span><\/p>\n<h3>Paso 2: fabricar dos recipientes de papel aluminio<\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-43428 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/2408137316ed3e1c6b29ef60acf34902.jpg\" alt=\"\" width=\"402\" height=\"228\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/2408137316ed3e1c6b29ef60acf34902.jpg 1160w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/2408137316ed3e1c6b29ef60acf34902-300x170.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/2408137316ed3e1c6b29ef60acf34902-1024x581.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/2408137316ed3e1c6b29ef60acf34902-768x436.jpg 768w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/2408137316ed3e1c6b29ef60acf34902-320x180.jpg 320w\" sizes=\"auto, (max-width: 402px) 100vw, 402px\" \/><\/p>\n<p>Prepara previamente tiras de papel aluminio de unos 5 cm \u00d7 10 cm.<\/p>\n<p>Enrolla el aluminio alrededor de dos pilas AAA pegadas con cinta adhesiva y presi\u00f3nalo bien contra la mesa para darle forma. Despu\u00e9s cierra uno de los extremos y retira las pilas.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-43411 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/b9dabdd7400ec5d8f245ba96605301a4.jpg\" alt=\"\" width=\"472\" height=\"336\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/b9dabdd7400ec5d8f245ba96605301a4.jpg 994w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/b9dabdd7400ec5d8f245ba96605301a4-300x214.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/b9dabdd7400ec5d8f245ba96605301a4-768x547.jpg 768w\" sizes=\"auto, (max-width: 472px) 100vw, 472px\" \/><\/p>\n<p style=\"text-align: center;\">Enrollando el aluminio a mano<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-43412 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/3edfc5a15d5a86b76eda18a21c11dd17.jpg\" alt=\"\" width=\"467\" height=\"242\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/3edfc5a15d5a86b76eda18a21c11dd17.jpg 1158w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/3edfc5a15d5a86b76eda18a21c11dd17-300x155.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/3edfc5a15d5a86b76eda18a21c11dd17-1024x531.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/3edfc5a15d5a86b76eda18a21c11dd17-768x398.jpg 768w\" sizes=\"auto, (max-width: 467px) 100vw, 467px\" \/><\/p>\n<p>Transfiere la mezcla con ayuda de un embudo y golpea suavemente el recipiente sobre la mesa para eliminar el aire entre las part\u00edculas.<\/p>\n<p><b>No hace falta golpear fuerte. Si lo hacen, el aluminio puede romperse.<\/b><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-43424 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/fdeb346867e17f5713f47e7341b78231.jpg\" alt=\"\" width=\"479\" height=\"393\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/fdeb346867e17f5713f47e7341b78231.jpg 1670w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/fdeb346867e17f5713f47e7341b78231-300x246.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/fdeb346867e17f5713f47e7341b78231-1024x841.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/fdeb346867e17f5713f47e7341b78231-768x631.jpg 768w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/fdeb346867e17f5713f47e7341b78231-1536x1262.jpg 1536w\" sizes=\"auto, (max-width: 479px) 100vw, 479px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-43423 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/22931511e3252740a12266de90b4b4b4.jpg\" alt=\"\" width=\"394\" height=\"719\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/22931511e3252740a12266de90b4b4b4.jpg 658w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/22931511e3252740a12266de90b4b4b4-165x300.jpg 165w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/22931511e3252740a12266de90b4b4b4-561x1024.jpg 561w\" sizes=\"auto, (max-width: 394px) 100vw, 394px\" \/><\/p>\n<h3>Paso 3: calentar en el tubo de ensayo \u2014 \u00a1el gran momento rojo de la reacci\u00f3n qu\u00edmica!<\/h3>\n<p>Deja una muestra como control y coloca la otra en el tubo de ensayo.<\/p>\n<p><b>Tapa el tubo con algod\u00f3n desengrasado<\/b> y calienta <b>la parte superior del recipiente de aluminio<\/b>.<\/p>\n<p>\u00bfPor qu\u00e9 arriba y no abajo?<\/p>\n<p>Porque si se calienta desde abajo, el calor del mechero y el de la reacci\u00f3n pueden romper el fondo del tubo.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-43422 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/07d1cf49aecc8097b3db559864b0a5f7.jpg\" alt=\"\" width=\"328\" height=\"510\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/07d1cf49aecc8097b3db559864b0a5f7.jpg 878w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/07d1cf49aecc8097b3db559864b0a5f7-193x300.jpg 193w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/07d1cf49aecc8097b3db559864b0a5f7-660x1024.jpg 660w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/07d1cf49aecc8097b3db559864b0a5f7-768x1191.jpg 768w\" sizes=\"auto, (max-width: 328px) 100vw, 328px\" \/><\/p>\n<p style=\"text-align: center;\"><span style=\"color: #ff0000;\"><b>Punto 4: usar algod\u00f3n como tapa para reducir la salida de vapores t\u00f3xicos<\/b><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-43413 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/d8fe1c22134849759a7fb9249e9fe7ba.jpg\" alt=\"\" width=\"478\" height=\"438\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/d8fe1c22134849759a7fb9249e9fe7ba.jpg 1076w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/d8fe1c22134849759a7fb9249e9fe7ba-300x275.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/d8fe1c22134849759a7fb9249e9fe7ba-1024x938.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/d8fe1c22134849759a7fb9249e9fe7ba-768x704.jpg 768w\" sizes=\"auto, (max-width: 478px) 100vw, 478px\" \/><\/p>\n<p style=\"text-align: center;\"><span style=\"color: #ff0000;\"><b>Punto 5: calentar la parte superior del aluminio, nunca la inferior<\/b><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-43414 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/140c6b6bb2700cc6810708ce950e714c.jpg\" alt=\"\" width=\"420\" height=\"300\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/140c6b6bb2700cc6810708ce950e714c.jpg 1706w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/140c6b6bb2700cc6810708ce950e714c-300x215.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/140c6b6bb2700cc6810708ce950e714c-1024x732.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/140c6b6bb2700cc6810708ce950e714c-768x549.jpg 768w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/140c6b6bb2700cc6810708ce950e714c-1536x1098.jpg 1536w\" sizes=\"auto, (max-width: 420px) 100vw, 420px\" \/><\/p>\n<p style=\"text-align: center;\"><span style=\"color: #ff0000;\"><b>Punto 6: sujetar la pinza correctamente y nunca sostenerla desde la parte m\u00f3vil<\/b><\/span><\/p>\n<p><iframe loading=\"lazy\" title=\"\u3010\u5b89\u5168\u306b\u3011\u786b\u5316\u9244\u306e\u5b9f\u9a13\u3092\u884c\u3046\u305f\u3081\u306e\uff11\uff13\u306e\u30dd\u30a4\u30f3\u30c8\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/ev6SxbGQOV8?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<p>Cuando la reacci\u00f3n comienza, puedes retirar el mechero. El propio calor generado mantiene la reacci\u00f3n en marcha.<\/p>\n<p>Ese brillo rojo, parecido a un fuego artificial en miniatura, es el punto culminante del experimento.<\/p>\n<p>Aqu\u00ed ocurre algo fascinante: el hierro (Fe) y el azufre (S), dos sustancias completamente distintas, se transforman en sulfuro de hierro (FeS), una sustancia nueva con propiedades diferentes.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-43415 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/d9483863bdf0b251eada164c255a80d7.jpg\" alt=\"\" width=\"470\" height=\"293\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/d9483863bdf0b251eada164c255a80d7.jpg 1942w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/d9483863bdf0b251eada164c255a80d7-300x187.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/d9483863bdf0b251eada164c255a80d7-1024x639.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/d9483863bdf0b251eada164c255a80d7-768x479.jpg 768w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/d9483863bdf0b251eada164c255a80d7-1536x959.jpg 1536w\" sizes=\"auto, (max-width: 470px) 100vw, 470px\" \/><\/p>\n<p><span style=\"color: #ff0000;\"><b>Punto 7: no hace falta apagar el mechero; lo importante es observar la reacci\u00f3n<\/b><\/span><\/p>\n<p><span style=\"color: #ff0000;\"><b>Punto 8: nunca poner la mano debajo del tubo<\/b><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-43416 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/19426da5591b205b2ece8931675bed21.jpg\" alt=\"\" width=\"470\" height=\"288\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/19426da5591b205b2ece8931675bed21.jpg 1826w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/19426da5591b205b2ece8931675bed21-300x184.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/19426da5591b205b2ece8931675bed21-1024x628.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/19426da5591b205b2ece8931675bed21-768x471.jpg 768w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/19426da5591b205b2ece8931675bed21-1536x942.jpg 1536w\" sizes=\"auto, (max-width: 470px) 100vw, 470px\" \/><\/p>\n<h3>Paso 4: comparar las propiedades despu\u00e9s de enfriar<\/h3>\n<p>Una vez fr\u00edo, extrae la muestra y ac\u00e9rcale un im\u00e1n.<\/p>\n<p>Antes de reaccionar, el hierro era atra\u00eddo f\u00e1cilmente. \u00bfY ahora?<\/p>\n<p><b>Punto 9: usar preferiblemente imanes de ferrita. Los de neodimio pueden atraer ligeramente el sulfuro de hierro.<\/b><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-43430 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/8afe1cc977b223e9ba861c094a149f72.jpg\" alt=\"\" width=\"451\" height=\"278\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/8afe1cc977b223e9ba861c094a149f72.jpg 1884w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/8afe1cc977b223e9ba861c094a149f72-300x185.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/8afe1cc977b223e9ba861c094a149f72-1024x630.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/8afe1cc977b223e9ba861c094a149f72-768x473.jpg 768w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/8afe1cc977b223e9ba861c094a149f72-1536x946.jpg 1536w\" sizes=\"auto, (max-width: 451px) 100vw, 451px\" \/><\/p>\n<h3>Paso 5: a\u00f1adir 3 gotas de \u00e1cido clorh\u00eddrico y comprobar el olor \u2014 el momento m\u00e1s peligroso<\/h3>\n<p>Aqu\u00ed es donde ocurre el mayor riesgo de intoxicaci\u00f3n.<\/p>\n<p>El sulfuro de hidr\u00f3geno es <b>m\u00e1s pesado que el aire<\/b>, por lo que tiende a acumularse cerca del suelo.<\/p>\n<p>Abre completamente puertas y ventanas y revisa otra vez la ventilaci\u00f3n.<\/p>\n<p>Las instrucciones a los alumnos deben repetirse muchas veces:<\/p>\n<p>\u30fb\u201cA\u00f1adir el \u00e1cido solo sobre peque\u00f1os fragmentos\u201d<br \/>\n\u30fb\u201cSolo tres gotas\u201d<\/p>\n<p>Si utilizas peque\u00f1os frascos goteros, evitar\u00e1s excesos\u2026 aunque siempre aparece alg\u00fan estudiante que intenta abrir m\u00e1s el dosificador.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-43431 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/c4ad3649d712887f292ed2d424f75155.jpg\" alt=\"\" width=\"451\" height=\"444\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/c4ad3649d712887f292ed2d424f75155.jpg 980w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/c4ad3649d712887f292ed2d424f75155-300x296.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/c4ad3649d712887f292ed2d424f75155-768x757.jpg 768w\" sizes=\"auto, (max-width: 451px) 100vw, 451px\" \/><\/p>\n<p style=\"text-align: center;\"><span style=\"color: #ff0000;\"><b>Punto 10: mantener puertas y ventanas abiertas. A\u00f1adir solo 3 gotas de \u00e1cido sobre peque\u00f1os fragmentos<\/b><\/span><\/p>\n<p style=\"text-align: left;\"><span style=\"color: #ff0000;\"><b>Punto 11: si alguien se siente mal, debe salir inmediatamente del aula<\/b><\/span><\/p>\n<p><span style=\"color: #ff0000;\"><b>Punto 12: el gas es t\u00f3xico. Hay que olerlo suavemente moviendo el aire con la mano, nunca acercando la cara ni inhalando fuerte<\/b><\/span><\/p>\n<p>El uso de placas de Petri es especialmente recomendable.<\/p>\n<p>En un tubo de ensayo, el gas tarda m\u00e1s en salir y algunos estudiantes terminan acercando demasiado la nariz.<\/p>\n<p>En cambio, en una placa de Petri el gas se dispersa r\u00e1pidamente y basta con abanicarlo suavemente con la mano.<\/p>\n<p><span style=\"color: #ff0000;\"><b>Punto 13: recoger siempre los residuos. Nunca tirarlos por el desag\u00fce<\/b><\/span><\/p>\n<p>La eliminaci\u00f3n de residuos requiere especial atenci\u00f3n. Si se deja abandonada una mezcla de hierro y azufre, <a href=\"https:\/\/phys-edu.net\/wp\/?p=48981\">puede incluso provocar incendios espont\u00e1neos en el laboratorio<\/a>.<\/p>\n<h2>Otros m\u00e9todos<\/h2>\n<h3>Calentar directamente sin usar tubo de ensayo<\/h3>\n<p>Tambi\u00e9n existe el m\u00e9todo de calentar directamente la mezcla.<\/p>\n<p>La reacci\u00f3n se ve espectacularmente bien, pero muchos estudiantes acercan demasiado la cara y pueden inhalar vapor de azufre.<\/p>\n<p>Si priorizas la seguridad, recomiendo claramente el m\u00e9todo con algod\u00f3n como tapa.<\/p>\n<p><iframe loading=\"lazy\" title=\"\u9244\u3068\u786b\u9ec4\u306e\u786b\u5316\u306e\u5b9f\u9a13\u305d\u306e\uff12\uff08\u76f4\u63a5\u52a0\u71b1\u3059\u308b\u5834\u5408\uff09\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/u2aAzBmEMI8?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<h3>Usar lana de acero<\/h3>\n<p>Algunos libros de texto proponen usar lana de acero junto con azufre.<\/p>\n<p>El resultado es algo as\u00ed:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-43437 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/2b48a2b1939a729691139d4742c6fff9.jpg\" alt=\"\" width=\"364\" height=\"494\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/2b48a2b1939a729691139d4742c6fff9.jpg 690w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/2b48a2b1939a729691139d4742c6fff9-221x300.jpg 221w\" sizes=\"auto, (max-width: 364px) 100vw, 364px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-43438 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/7059832162eaa50f1cd9f1e44d84ac6e.jpg\" alt=\"\" width=\"196\" height=\"377\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/7059832162eaa50f1cd9f1e44d84ac6e.jpg 506w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/7059832162eaa50f1cd9f1e44d84ac6e-156x300.jpg 156w\" sizes=\"auto, (max-width: 196px) 100vw, 196px\" \/><\/p>\n<p>La observaci\u00f3n resulta bastante sencilla y visual.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-43439 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/317e9d7b3202fdf08076b67ca942a6a7.jpg\" alt=\"\" width=\"162\" height=\"295\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/317e9d7b3202fdf08076b67ca942a6a7.jpg 464w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2023\/08\/317e9d7b3202fdf08076b67ca942a6a7-165x300.jpg 165w\" sizes=\"auto, (max-width: 162px) 100vw, 162px\" \/><\/p>\n<h2 class=\"g-ytsubscribe\" data-channelid=\"UCBoF1yPvFnXnSJ_Xe5AmXcw\" data-layout=\"full\" data-count=\"default\">Material relacionado<\/h2>\n<h3>Juego educativo de seguridad<\/h3>\n<p>Junto con la profesora Hina Morishige desarrollamos un juego tipo \u201csugoroku\u201d para ense\u00f1ar seguridad en el experimento de hierro y azufre.<\/p>\n<p>Permite aprender normas de seguridad jugando y funciona muy bien antes de realizar la pr\u00e1ctica.<\/p>\n<p><a href=\"https:\/\/phys-edu.net\/wp\/?p=50417\">Puedes descargarlo gratis aqu\u00ed.<\/a><\/p>\n<p><a href=\"https:\/\/phys-edu.net\/wp\/?p=50417\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-50481 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-08-05-5.26.06.jpg\" alt=\"\" width=\"286\" height=\"212\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-08-05-5.26.06.jpg 1090w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-08-05-5.26.06-300x223.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-08-05-5.26.06-1024x761.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/08\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-08-05-5.26.06-768x571.jpg 768w\" sizes=\"auto, (max-width: 286px) 100vw, 286px\" \/><\/a><\/p>\n<div data-channelid=\"UCBoF1yPvFnXnSJ_Xe5AmXcw\" data-layout=\"full\" data-count=\"default\">\n<h3>Diapositivas de seguridad<\/h3>\n<p style=\"text-align: center;\">\u3010<a href=\"https:\/\/docs.google.com\/presentation\/d\/1LQTG1xUSgCzcqpje-pH5aRT2mZaY8uQ2gHZYx7Mu648\/edit?usp=sharing\">Aqu\u00ed puedes consultar las diapositivas que us\u00e9 en clase.<\/a>\u3011<\/p>\n<h3>Radio educativa de seguridad<\/h3>\n<p style=\"text-align: center;\">\u3010<a href=\"https:\/\/music.youtube.com\/watch?v=dtaWr9ioHDY&amp;si=iEVevCGle-9O4_Z7\">Tambi\u00e9n prepar\u00e9 una versi\u00f3n en formato radio para alertar a los estudiantes sobre los riesgos.<\/a>\u3011<\/p>\n<audio class=\"wp-audio-shortcode\" id=\"audio-63431-1\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/05\/ac24f94eddb7ca2739cf3f4f2ab1370a.mp3?_=1\" \/><a href=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/05\/ac24f94eddb7ca2739cf3f4f2ab1370a.mp3\">https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/05\/ac24f94eddb7ca2739cf3f4f2ab1370a.mp3<\/a><\/audio>\n<h3>Casos reales de accidentes<\/h3>\n<p>\u30fb<a href=\"https:\/\/www.asahi.com\/articles\/ASV5G12W6V5GUTIL00LM.html?iref=comtop_AreaArticle_02\">Posible generaci\u00f3n de sulfuro de hidr\u00f3geno en una secundaria de Tokio<\/a>\uff08Asahi Shimbun\uff09\uff082026\/05\/15\uff09<\/p>\n<p>\u30fb<a href=\"https:\/\/mainichi.jp\/articles\/20250618\/k00\/00m\/040\/219000c\">\u00bfEs realmente necesario este experimento?<\/a>\uff08Mainichi Shimbun\uff09\uff082025\/6\/19\uff09<\/p>\n<p>\u30fb\u300c<a href=\"https:\/\/newsdig.tbs.co.jp\/articles\/-\/1913055\">Algo utilizado en el experimento de ciencias estaba calent\u00e1ndose<\/a>\u300d\u5bae\u57ce\u770c\u5973\u5ddd\u753a\uff082025\/5\/14\uff09<\/p>\n<p>Es muy posible que este caso tambi\u00e9n estuviera relacionado con sulfuro de hidr\u00f3geno.<\/p>\n<\/div>\n<h3>Contacto y colaboraciones<\/h3>\n<p>\u00a1Quiero acercar la ciencia divertida y sorprendente a todo el mundo! En este sitio comparto experimentos caseros f\u00e1ciles y consejos para disfrutarlos al m\u00e1ximo.<\/p>\n<p>\u30fbM\u00e1s informaci\u00f3n sobre Ken Kuwako: <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=37\">aqu\u00ed<\/a><\/p>\n<p>\u30fbSolicitudes de charlas, art\u00edculos, talleres, supervisi\u00f3n para TV, etc.: <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">aqu\u00ed<\/a><\/p>\n<p><span class=\"s2\">\u30fb\u00a1Novedades y actualizaciones 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\">En el canal \u201cCiencia para Curiosos\u201d tambi\u00e9n comparto v\u00eddeos experimentales.<\/a><\/p>\n<h3>\uff15\u6708\u306e\u30a4\u30c1\u30aa\u30b7\u5b9f\u9a13\uff01<\/h3>\r\n<p>\u30ad\u30fc\u30f3\u3068\u51b7\u3048\u308b\u30c9\u30e9\u30a4\u30a2\u30a4\u30b9\uff01\u6c17\u6e29\u304c\u4e0a\u304c\u3063\u3066\u304f\u308b\u3053\u306e\u6642\u671f\u30fb\u30c9\u30e9\u30a4\u30a2\u30a4\u30b9\u3092\u4f7f\u3063\u305f\u6607\u83ef\u30fb\u51dd\u7d50\u30fb\u7b49\u901f\u5ea6\u76f4\u7dda\u904b\u52d5\u306e\u5b9f\u9a13\u306f\u3044\u304b\u304c\uff1f<\/p>\r\n<p><img class=\"alignnone wp-image-39516 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe.jpg\" sizes=\"auto, (max-width: 550px) 100vw, 550px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe.jpg 1406w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe-300x168.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe-1024x572.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe-768x429.jpg 768w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe-320x180.jpg 320w\" alt=\"\" width=\"453\" height=\"253\" \/><\/p>\r\n<p style=\"text-align: center;\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=39513\">\u6db2\u4f53\u30bc\u30ed\uff01\u30c9\u30e9\u30a4\u30a2\u30a4\u30b9\u304c\u6d88\u3048\u308b\u307e\u3067\u306e\uff13\u6642\u9593\u3092\u79d1\u5b66\u3059\u308b\uff08\u6607\u83ef\u30fb\u51dd\u7d50\u30fb\u7b49\u901f\u5ea6\u76f4\u7dda\u904b\u52d5\uff09<\/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>4\u670830\u65e5\uff08\u6728\uff09\u300cTHE\u7a81\u7834\u30d5\u30a1\u30a4\u30eb\u300d\uff08\u65e5\u672c\u30c6\u30ec\u30d3\uff09\u306e<a href=\"https:\/\/phys-edu.net\/wp\/?p=62906\">\u79d1\u5b66\u76e3\u4fee\u3092\u62c5\u5f53\u3057\u307e\u3057\u305f<\/a>\u3002<\/li>\r\n<li>5\u67088\u65e5\uff08\u91d1\uff09<a href=\"https:\/\/phys-edu.net\/wp\/?p=62629\">\u7406\u79d1\u6559\u80b2\u30cb\u30e5\u30fc\u30b9<\/a>\u3092\u62c5\u5f53\u3057\u307e\u3057\u305f\u3002<\/li>\r\n<li>6\u670814\u65e5\uff08\u65e5\uff09\u3000\u5343\u8449\u5927\u5b66\u30a4\u30f3\u30b9\u30bf\u30ec\u30fc\u30b7\u30e7\u30f3\u300c\u63a2\u7a76\u300d\u306b\u3066\u8b1b\u5e2b\u3092\u52d9\u3081\u307e\u3059<\/li>\r\n<li>6\u670826\u65e5\uff08\u91d1\uff09\u3000\u5343\u8449\u5927\u5b66\u306e\u516c\u958b\u7814\u7a76\u4f1a\uff08\u4e2d\u5b66\u7406\u79d1\u306b\u3064\u3044\u3066\u6388\u696d\u516c\u958b\u4e88\u5b9a\uff09<\/li>\r\n<li>7\u670818\u65e5\uff08\u571f\uff09\u3000<a href=\"https:\/\/phys-edu.net\/wp\/?p=60018\">\u6559\u54e1\u5411\u3051\u5b9f\u9a13\u8b1b\u7fd2\u4f1a\u300c\u30ca\u30ea\u30ab\u30ab\u30b5\u30a4\u30a8\u30f3\u30b9\u30a2\u30ab\u30c7\u30df\u30fc\u300d\u306e\u8b1b\u5e2b\u3092\u3057\u307e\u3059<\/a>\u3002\u304a\u4f1a\u3044\u3057\u307e\u3057\u3087\u3046\u3002<\/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\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\" \/><br \/><\/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;\"><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>\uff08\u65e5\u672c\u8a9e\uff09<\/p>\r\n<p style=\"text-align: center;\"><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>\uff08\u82f1\u8a9e\uff09<\/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, el \u201cScience Trainer\u201d. Cada d\u00eda es un experimento nuevo. \u3010\u00a1Este art\u00edculo tambi\u00e9n est\u00e1 disponibl [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":63439,"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":""},"categories":[1492],"tags":[],"class_list":["post-63431","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science-es"],"jetpack_featured_media_url":"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/19426da5591b205b2ece8931675bed21.jpg","jetpack-related-posts":[{"id":53958,"url":"https:\/\/phys-edu.net\/wp\/?p=53958&lang=es","url_meta":{"origin":63431,"position":0},"title":"\u00a1Qu\u00edmica con un &#8220;Pop!&#8221; Desvelando el Secreto del Hidr\u00f3geno","author":"\u6851\u5b50 \u7814","date":"2025\u5e7410\u67087\u65e5","format":false,"excerpt":"Soy Ken Kuwako, tu entrenador de ciencia. \u00a1Cada d\u00ed\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\/12\/fedf019bc7e16778461dffc28bc4648e.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/12\/fedf019bc7e16778461dffc28bc4648e.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/12\/fedf019bc7e16778461dffc28bc4648e.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":51890,"url":"https:\/\/phys-edu.net\/wp\/?p=51890&lang=es","url_meta":{"origin":63431,"position":1},"title":"Hidr\u00f3geno + Ox\u00edgeno = \u00a1BOOM! Un experimento con gas detonante que hace que la qu\u00edmica sea explosiva","author":"\u6851\u5b50 \u7814","date":"2025\u5e749\u670810\u65e5","format":false,"excerpt":"Soy Ken Kuwako, entrenador de ciencias. 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