{"id":69231,"date":"2026-11-04T04:34:35","date_gmt":"2026-11-03T19:34:35","guid":{"rendered":"https:\/\/phys-edu.net\/wp\/?p=69231"},"modified":"2026-11-04T04:34:35","modified_gmt":"2026-11-03T19:34:35","slug":"the-flame-turned-green-is-it-really-copper-a-test-after-electrolysis-of-copper-chloride","status":"publish","type":"post","link":"https:\/\/phys-edu.net\/wp\/?p=69231&lang=en","title":{"rendered":"The Flame Turned Green! Is It Really Copper? A Test After Electrolysis of Copper Chloride"},"content":{"rendered":"<p style=\"text-align: center;\"><span style=\"color: #339966;\"><strong>Ken Kuwako, Science Trainer here. Every day is an experiment.<\/strong><\/span><\/p>\n<p>Which metal do you think of when someone mentions a green flame? The blue-green blooms in a summer fireworks display, it turns out, get their color from a close relative of the copper you&#8217;d find in a school science lab. Today&#8217;s story starts with a middle schooler asking, &#8220;Is this really copper?&#8221; and ends up in the colorful world of flames.<\/p>\n<h3>What did the electrolysis actually make?<\/h3>\n<p>It happened during an experiment on the electrolysis of copper chloride solution. A thick coating of reddish-brown material built up on the surface of the cathode (the negative electrode). When we scraped it onto a piece of filter paper and rubbed it with a lab spoon, it gleamed (a metallic luster, maybe?).<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-69229 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-11-04-4.33.26.jpeg\" alt=\"\" width=\"423\" height=\"390\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-11-04-4.33.26.jpeg 962w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-11-04-4.33.26-300x276.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-11-04-4.33.26-768x707.jpeg 768w\" sizes=\"auto, (max-width: 423px) 100vw, 423px\" \/><\/p>\n<p><iframe loading=\"lazy\" title=\"\u85ac\u3055\u3058\u3067\u64e6\u308b\u3068\u5149\u6ca2\u304c\uff01\u5869\u5316\u9285\u306e\u96fb\u6c17\u5206\u89e3\u306e\u5b9f\u9a13\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/xMBR-MrVEOM?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>One student spoke up: &#8220;I want to find out for myself whether this is really copper.&#8221;<\/p>\n<p>Not settling for &#8220;because the textbook says so,&#8221; and instead wanting to test it with your own hands, is exactly how a scientist thinks.<\/p>\n<p>By the way, chlorine gas is being produced at the anode (the positive electrode). It has a sharp, swimming-pool smell, so this experiment should always be done with good ventilation.<\/p>\n<h3>Putting it to the flame test<\/h3>\n<p>So we decided to check with a flame test. The method is simple: place the deposited material on a lab spoon and hold it in the flame of a gas burner.<\/p>\n<p>The flame turned a beautiful green.<\/p>\n<p><iframe loading=\"lazy\" title=\"\u708e\u8272\u53cd\u5fdc\u3067\u78ba\u304b\u3081\u308b\u5869\u5316\u9285\u306e\u96fb\u6c17\u5206\u89e3\uff08\u85ac\u3055\u3058\u306e\u4e0a\u306b\u4e57\u305b\u3066\uff09\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/8vHeSoyz3wQ?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><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-69226 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-11-04-4.20.52.jpeg\" alt=\"\" width=\"475\" height=\"476\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-11-04-4.20.52.jpeg 1108w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-11-04-4.20.52-300x300.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-11-04-4.20.52-1020x1024.jpeg 1020w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-11-04-4.20.52-150x150.jpeg 150w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-11-04-4.20.52-768x771.jpeg 768w\" sizes=\"auto, (max-width: 475px) 100vw, 475px\" \/><\/p>\n<p>Put the two observations together, a metallic luster and a green flame, and it&#8217;s reasonable to conclude that the deposit is copper. Faced with the result, the student sat there looking thoughtful and serious.<\/p>\n<h3>Why does a flame change color?<\/h3>\n<p>A flame test works because metal atoms absorb heat from the flame. When the electrons inside an atom receive that heat, they jump up to a higher energy state. But they can&#8217;t stay there for long. When an electron drops back to its original state, it releases the extra energy as light.<\/p>\n<p>The color of that light is fixed for each element. That&#8217;s why you can look at the color of a flame and work out which element is in it. Here are some of the main elements and their flame colors:<\/p>\n<p>\u30fbLithium: red<br \/>\n\u30fbSodium: yellow<br \/>\n\u30fbPotassium: reddish-purple<br \/>\n\u30fbCalcium: orange-red<br \/>\n\u30fbBarium: yellowish-green<br \/>\n\u30fbCopper: blue-green<\/p>\n<p>Fireworks use this same mechanism. The blue-green ones are made with copper compounds. Isn&#8217;t it exciting to think that what&#8217;s happening on a little lab spoon is the same principle behind the huge fireworks lighting up the night sky?<\/p>\n<h3>Is a green flame enough to say &#8220;it&#8217;s copper&#8221;?<\/h3>\n<p>Now let&#8217;s take one more step. Just because the flame turned green, can we say for sure that it&#8217;s copper?<\/p>\n<p>In fact, barium also produces a yellowish-green flame, so going by color alone can make the two hard to tell apart. Also, although textbooks describe the copper flame as blue-green, it can look bluer or greener depending on who&#8217;s looking and under what conditions. Burning copper compounds that contain chlorine is also known to make the flame look bluer. Since our material came out of a copper chloride solution, a little chlorine-containing residue may have been left on its surface.<\/p>\n<p>On top of that, a flame test only tells you that the element copper is present. It can&#8217;t prove that the material is copper metal.<\/p>\n<p>That&#8217;s why the student did well to combine two pieces of evidence: the metallic luster and the flame color. Stacking up multiple pieces of evidence makes a conclusion more trustworthy. If you want to be even more certain, here are some other things you could try:<\/p>\n<p>\u30fbRub it with sandpaper or similar and see whether a reddish-brown luster appears<br \/>\n\u30fbTest whether it conducts electricity<br \/>\n\u30fbHit it and see whether it stretches instead of shattering (is it malleable?)<\/p>\n<p>The more ways you test it, the stronger the case for &#8220;it&#8217;s copper&#8221; becomes.<\/p>\n<h3>From one experiment to the next question<\/h3>\n<p>This experiment turned into an investigation of the form &#8220;take what you made in one experiment and verify it with another.&#8221; Checking the result of one experiment by a different method is the heart of how science works.<\/p>\n<p>Next, it would be fun to run flame tests on other metals and compare their colors. Just imagining what colors of light the metals around us would show in a flame is enough to get you excited.<\/p>\n<h3>Contact and requests<\/h3>\n<p>Science is more wonderful and closer to home than you think! This site collects fun science experiments you can do at home, along with tips to make them work. Try searching around!<br \/>\n\u30fbThe contents of Kagaku no Neta-cho (Science Idea Notebook) have been published as a book. Details are <a href=\"https:\/\/amzn.to\/42PMCEL\">here<\/a><br \/>\n\u30fbTo learn more about the site&#8217;s author, Ken Kuwako, click <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=37\">here<\/a><br \/>\n\u30fbFor requests of all kinds (writing, lectures, science workshops, TV supervision and appearances, and more), click <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">here<\/a><br \/>\n<span class=\"s2\">\u30fbGet article updates on <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\">Science Neta Channel<\/a> has experiment videos too!<\/p>\n<p style=\"text-align: center;\"><img class=\"alignnone wp-image-59955\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-03-6.19.06.jpeg\" alt=\"\u6bce\u65e5\u304c\u5b9f\u9a13\u3002\" width=\"344\" height=\"79\" \/><\/p>\r\n<p class=\"p1\">\u300c\u79d1\u5b66\u306e\u30cd\u30bf\u5e33\u300d\u306f\u3001\u8eab\u8fd1\u306a\u79d1\u5b66\u306e\u5b9f\u9a13\u3084\u30c8\u30d4\u30c3\u30af\u3092\u5e45\u5e83\u304f\u7d39\u4ecb\u30fb\u89e3\u8aac\u3059\u308b\u79d1\u5b66\u60c5\u5831\u7dcf\u5408\u30b5\u30a4\u30c8\u3067\u3059\u3002\u89aa\u5b50\u3067\u4e00\u7dd2\u306b\u624b\u3092\u52d5\u304b\u3057\u306a\u304c\u3089\u3001\u81ea\u7136\u306e\u4e0d\u601d\u8b70\u3084\u79d1\u5b66\u306e\u9762\u767d\u3055\u3092\u4f53\u9a13\u3057\u307e\u3057\u3087\u3046\uff01\u3088\u308a\u8a73\u3057\u304f\u306f<a href=\"https:\/\/phys-edu.net\/wp\/?page_id=37\">\u3053\u3061\u3089<\/a>\u3002<\/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><a href=\"https:\/\/phys-edu.net\/wp\/?p=68740\">\u300c\u30cd\u30a4\u30c1\u30e3\u30fc\u30c6\u30a3\u30fc\u30c1\u30e3\u30fc\u300d\uff08TBS\uff09<\/a>\u306b\u51fa\u6f14\u3057\u307e\u3057\u305f\u3002Tver\u306b\u306611\u67083\u65e5\uff08\u706b\uff09\u307e\u3067\u914d\u4fe1\u4e2d\u3067\u3059\u3002<\/li>\r\n<\/ul>\r\n<p><img class=\"alignnone  wp-image-68951 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/10\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-10-28-4.27.06.jpeg\" alt=\"\" width=\"474\" height=\"266\" \/><\/p>\r\n<ul>\r\n<li><a href=\"https:\/\/www.mbs.jp\/saturday-plus\/\">\u30b5\u30bf\u30d7\u30e9\uff08MBS\uff09<\/a>\u306b\u3066\u300c\u65e5\u5e38\u306b\u6f5c\u3080\uff01\u30d4\u30f3\u30c1\u8131\u51fa\u6cd5\u306b\u3064\u3044\u3066\u300d\u306e\u30b3\u30fc\u30ca\u30fc\u306b\u51fa\u6f14\u3057\u307e\u3057\u305f\u3002Tver\u306b\u3066<a href=\"https:\/\/tver.jp\/episodes\/epmfevh9zv?p=1654\">11\u67087\u65e5\uff08\u571f\uff09\u307e\u3067\u914d\u4fe1\u4e2d\u3067\u3059\u3002<\/a><\/li>\r\n<\/ul>\r\n<p><img class=\"alignnone  wp-image-69117 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-11-01-4.35.38.jpeg\" alt=\"\" width=\"479\" height=\"269\" \/><\/p>\r\n<ul>\r\n<li>11\/4\uff08\u6c34\uff09<a href=\"https:\/\/www.ntv.co.jp\/zip\/\">ZIP\uff08\u65e5\u672c\u30c6\u30ec\u30d3\uff09<\/a>\u306e\u30b3\u30fc\u30ca\u30fc\uff087:20\u5206\u3053\u308d\u653e\u9001\u4e88\u5b9a\uff09\u306b\u3066\u79d1\u5b66\u76e3\u4fee\u3092\u62c5\u5f53\u3057\u307e\u3057\u305f\u3002\u524d\u56de\u306f\u590f\u306b\u4e00\u5ea6\u51fa\u6f14\u3057\u307e\u3057\u305f\u304c\u3001\u4eca\u56de\u306f\u76e3\u4fee\u306e\u307f\u3067\u3059\u3002\u65e5\u5e38\u306b\u6f5c\u3080\u79d1\u5b66\u3092\u305c\u3072\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/li>\r\n<\/ul>\r\n<p><img class=\"alignnone  wp-image-69217 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-11-03-17.24.11.jpeg\" alt=\"\" width=\"319\" height=\"320\" \/><\/p>\r\n<ul>\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>\uff11\uff11\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=69130\">\u3069\u3046\u3057\u3066\u7d50\u9732\u306f\u8d77\u3053\u308b\u306e\u304b\uff1f\u7d50\u9732\u3092\u9632\u3050\u305f\u3081\u306b\u306f\uff1f\u5b9f\u9a13\u3067\u78ba\u304b\u3081\u3088\u3046\uff01<\/a><\/p>\r\n<p><img class=\"alignnone wp-image-69132 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/11\/%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%88-2026-10-31-10.02.13-10.07.37.jpeg\" sizes=\"(max-width: 420px) 100vw, 420px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-10-31-10.02.13-10.07.37.jpeg 1322w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-10-31-10.02.13-10.07.37-300x253.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-10-31-10.02.13-10.07.37-1024x863.jpeg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/11\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-10-31-10.02.13-10.07.37-768x647.jpeg 768w\" alt=\"\" width=\"316\" height=\"266\" \/><\/p>\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>Ken Kuwako, Science Trainer here. Every day is an experiment. Which metal do you think of when someone mention [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":69226,"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":[781],"tags":[],"class_list":["post-69231","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science-en"],"jetpack-related-posts":[{"id":54736,"url":"https:\/\/phys-edu.net\/wp\/?p=54736&lang=en","url_meta":{"origin":69231,"position":0},"title":"Mechanical Pencil Lead as Electrodes!? Track Chemical Changes with \u201cElectrolysis of Copper(II) Chloride\u201d (Eco-Friendly Microscale Experiment!)","author":"\u6851\u5b50 \u7814","date":"2025\u5e7410\u670821\u65e5","format":false,"excerpt":"I\u2019m Kuwako Ken, your Science Trainer. Every Day is\u2026","rel":"","context":"Science","block_context":{"text":"Science","link":"https:\/\/phys-edu.net\/wp\/?cat=781&lang=en"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/10\/3e8474dc4a3caf45cf4f4174b83e1fd8.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/10\/3e8474dc4a3caf45cf4f4174b83e1fd8.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/10\/3e8474dc4a3caf45cf4f4174b83e1fd8.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/10\/3e8474dc4a3caf45cf4f4174b83e1fd8.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/10\/3e8474dc4a3caf45cf4f4174b83e1fd8.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":55516,"url":"https:\/\/phys-edu.net\/wp\/?p=55516&lang=en","url_meta":{"origin":69231,"position":1},"title":"Smaller Than Your Phone: This &#8220;Little Giant&#8221; is Revolutionizing the Science Lab","author":"\u6851\u5b50 \u7814","date":"2025\u5e7411\u67087\u65e5","format":false,"excerpt":"This is Ken Kuwako, your science trainer. 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Sparkling Colors Unleashed \u2014 Flame Reaction Fun with a Spray!","author":"\u6851\u5b50 \u7814","date":"2025\u5e7410\u670823\u65e5","format":false,"excerpt":"I'm Ken Kuwako, a Science Trainer. 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