{"id":60318,"date":"2026-02-09T05:15:00","date_gmt":"2026-02-08T20:15:00","guid":{"rendered":"https:\/\/phys-edu.net\/wp\/?p=60318"},"modified":"2026-02-09T05:15:00","modified_gmt":"2026-02-08T20:15:00","slug":"learn-how-engines-work-with-a-shocking-pop-the-secret-of-alcohol-explosion-experiments-first-law-of-thermodynamics","status":"publish","type":"post","link":"https:\/\/phys-edu.net\/wp\/?p=60318&lang=en","title":{"rendered":"Learn How Engines Work with a Shocking \u201cPop!\u201d \u2014 The Secret of Alcohol Explosion Experiments (First Law of Thermodynamics)"},"content":{"rendered":"<p style=\"text-align: center;\"><strong>I am Ken Kuwako, your Science Trainer. Every day is an experiment.<\/strong><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=1827\">Back to Special Page<\/a><\/p>\n<h3>The &#8220;Pop!&#8221; That Opens the Door to Science: A Safe At-Home Thermodynamics Experiment<\/h3>\n<p style=\"text-align: center;\">\u3010<a href=\"https:\/\/music.youtube.com\/watch?v=vmBR70rYD2U&amp;si=tdFX7a1sdSiWgh3S\">This article is also available on Radio!<\/a>\u3011<\/p>\n<p>There is something instinctively thrilling about seeing something launch right before your eyes. Have you ever looked at a simple everyday object and wondered, &#8220;How does that actually work?&#8221;<\/p>\n<p>Today, I want to share a thrilling yet safe science experiment to spark your intellectual curiosity. The star of the show? Hand sanitizer (rubbing alcohol), something found in almost every household. It is the magic key to unlocking a powerful, invisible force.<\/p>\n<p>The word &#8220;explosion&#8221; might sound a bit intense, but don&#8217;t worry. This experiment simply harnesses the power of a tiny amount of alcohol turning into gas and rapidly expanding. You will get to hear, see, and feel &#8220;gas doing work&#8221; in real-time. This phenomenon is the gateway to the profound world of thermodynamics\u2014the same principles that power car engines and launch rockets into space.<\/p>\n<p>Join me as we experience this surprising &#8220;Pop!&#8221; and rediscover the joy of science!<\/p>\n<p><iframe loading=\"lazy\" title=\"\u7a7a\u6c17\u306b\u4ed5\u4e8b\u3092\u3055\u305b\u3066\u307f\u308b\u3068\u2026\u3042\u75db\uff01\u71b1\u529b\u5b66\u7b2c\u4e00\u6cd5\u5247\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/mTNW7m13Eyc?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>This experiment isn&#8217;t just a great way for middle schoolers to understand the difference between &#8220;combustion&#8221; and &#8220;explosions&#8221;; it is also the perfect visual aid for grasping the &#8220;First Law of Thermodynamics,&#8221; which is often a hurdle in high school physics.<\/p>\n<h3>The Science Recipe: Try the Alcohol Explosion Experiment!<\/h3>\n<p> The heart of this experiment lies in the fact that burning a small amount of alcohol instantly heats and expands the air inside a sealed can. This trapped energy, looking for an escape, provides the power to launch a paper cup lid high into the air.<\/p>\n<h4 style=\"text-align: center;\">What You Will Need<\/h4>\n<h4 style=\"text-align: center;\"><a href=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2014\/02\/c24545f73a9b1bac524f0a4807d962b1.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2014\/02\/c24545f73a9b1bac524f0a4807d962b1-233x300.jpg\" alt=\"Setup\" width=\"233\" height=\"300\" \/><\/a><\/h4>\n<ul>\n<li><strong>Paper Cup<\/strong>: Acts as your lid (the projectile). A standard size is perfect.<\/li>\n<li><strong>Aluminum Can<\/strong>: An empty soda can works best. One with a flat bottom is more stable.<\/li>\n<li><strong>Can Opener<\/strong>: To remove the top of the aluminum can.<\/li>\n<li><strong>Awl (or a sharp tool)<\/strong>: To poke a small ignition hole in the bottom of the can.<\/li>\n<li><strong>Rubbing Alcohol<\/strong>: Ethanol with a concentration of 70% or higher. Spray types are highly recommended as they mist easily.<\/li>\n<li><strong>Lighter or Multi-purpose Lighter<\/strong>: For ignition.<\/li>\n<li><strong>Safety Gear<\/strong>: Always have a wet cloth and a bucket of water ready.<\/li>\n<\/ul>\n<h3>Experimental Procedure: Safety First!<\/h3>\n<p> Once you are ready, let&#8217;s start. Precision and care with each step are the secrets to both success and safety.<\/p>\n<ol>\n<li><strong>Cut the top off the can<\/strong> Use the can opener to completely remove the top (the drinking side) of the aluminum can. Be careful not to cut your hands on the sharp edges. Wash and dry the inside thoroughly.<\/li>\n<li><strong>Create the ignition hole<\/strong> Using the awl, poke a tiny hole in the center of the bottom of the can. This will be your &#8220;fire gateway.&#8221; Work on a stable surface and be careful not to slip.<\/li>\n<li><strong>Add the alcohol (Most Important Step!)<\/strong> Spray just 2 pumps or add 2-3 drops of alcohol into the can. NEVER add more than this. Too much alcohol can cause a large flame to linger after the explosion, which is dangerous. This &#8220;tiny amount&#8221; is what creates the perfect scientific reaction. <a href=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2014\/02\/dc11546b4f12ef14ee2f01bbd41d5407.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-2384\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2014\/02\/dc11546b4f12ef14ee2f01bbd41d5407.jpg\" alt=\"Alcohol dosage\" width=\"248\" height=\"298\" \/><\/a><\/li>\n<li><strong>Vaporize and mix<\/strong> Place the paper cup lightly on top of the can. Give the can a few gentle shakes to help the alcohol evaporate and distribute the vapor throughout the can. <img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-large wp-image-24475\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2014\/02\/a14a3e8f48b1fffd35acc502c2b98110.jpg\" alt=\"Mixing vapor\" width=\"636\" height=\"357\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2014\/02\/a14a3e8f48b1fffd35acc502c2b98110.jpg 636w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2014\/02\/a14a3e8f48b1fffd35acc502c2b98110-300x168.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2014\/02\/a14a3e8f48b1fffd35acc502c2b98110-320x180.jpg 320w\" sizes=\"auto, (max-width: 636px) 100vw, 636px\" \/><\/li>\n<li><strong>The Moment of Ignition!<\/strong> Double-check that your wet cloth and water bucket are within reach. Bring the lighter flame close to the hole at the bottom. <img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-24471\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2014\/02\/a0158ee85b00598f2bcb31fe97621d08.jpg\" alt=\"Ignition\" width=\"635\" height=\"353\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2014\/02\/a0158ee85b00598f2bcb31fe97621d08.jpg 635w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2014\/02\/a0158ee85b00598f2bcb31fe97621d08-300x167.jpg 300w\" sizes=\"auto, (max-width: 635px) 100vw, 635px\" \/><\/li>\n<\/ol>\n<h3>Results: The &#8220;Pop&#8221; is Thermodynamics in Action<\/h3>\n<p> https:\/\/youtu.be\/mTNW7m13Eyc<\/p>\n<p>The moment you bring the flame close, you&#8217;ll hear a satisfying &#8220;Pop!&#8221; and the paper cup will soar! This happens because the alcohol vapor burns instantly, causing the air temperature inside to skyrocket. This hot air wants to expand aggressively, and that force pushes the paper cup toward the ceiling.<\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2014\/02\/78b95a3d03fc7ff1f9caa9280388ad57.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2014\/02\/78b95a3d03fc7ff1f9caa9280388ad57-248x300.jpg\" alt=\"Result\" width=\"248\" height=\"300\" \/><\/a><\/p>\n<p>This is a real-world experience of the First Law of Thermodynamics. The &#8220;chemical energy&#8221; of the alcohol converted into &#8220;thermal energy&#8221; via combustion. That heat then performed &#8220;work&#8221; by pushing the gas, which finally became the &#8220;kinetic energy&#8221; that launched the cup. Energy is constantly shifting forms, dancing right before your eyes.<\/p>\n<p>We captured this heat movement with a thermographic camera. Look at these incredible results:<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-60246\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/%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%88-2026-02-08-5.41.09.jpeg\" alt=\"Before\" width=\"431\" height=\"360\" \/> Just before ignition.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-60247\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/%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%88-2026-02-08-5.41.35.jpeg\" alt=\"During\" width=\"438\" height=\"408\" \/> At the moment of the &#8220;Pop!&#8221;, the internal temperature spikes into the red!<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-60248\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/%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%88-2026-02-08-5.42.51-1.jpeg\" alt=\"Warning\" width=\"448\" height=\"399\" \/> <strong>\u3010WARNING!\u3011<\/strong> Never look directly into the can from above during the experiment. It is extremely dangerous.<\/p>\n<h3>\u3010Golden Rules for a Safe Experiment\u3011<\/h3>\n<ul>\n<li><strong>No Overdosing!<\/strong>: Limit the alcohol to 2 pumps. Being greedy with the amount can lead to a sustained fire inside the can. If a flame persists, cover it with a wet cloth to cut off the oxygen and extinguish it calmly.<\/li>\n<li><strong>Adult Supervision Required<\/strong>: This experiment deals with the &#8220;power&#8221; of science. Students should always perform this with a parent, guardian, or teacher in a clear area away from flammable materials.<\/li>\n<li><strong>Ventilation is Key<\/strong>: The air after the experiment contains combustion gases. Open a window and ensure good airflow.<\/li>\n<\/ul>\n<p>For those who want to dive deeper into these thermodynamic wonders or revisit high school physics, my book &#8220;High School Physics Review for Adults&#8221; offers even more fun and detailed explanations. Give it a read, and you&#8217;ll find that the invisible flow of energy feels much more familiar.<\/p>\n<p><iframe loading=\"lazy\" title=\"\u30a2\u30eb\u30b3\u30fc\u30eb\u3067\u30b3\u30c3\u30d7\u30ed\u30b1\u30c3\u30c8\u3092\u98db\u3070\u305d\u3046\uff08\u71b1\u529b\u5b66\u7b2c\u4e00\u6cd5\u5247\uff09\" width=\"1140\" height=\"855\" src=\"https:\/\/www.youtube.com\/embed\/AmNbT7I2aJg?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>A dynamic world of science is hiding in your kitchen cabinets. Are you ready to be amazed by the &#8220;work of gas&#8221; taught by just a few drops of alcohol? Stay safe and give it a try!<\/p>\n<h3>Inquiries and Requests<\/h3>\n<p> Making the wonders of science more accessible! I&#8217;ve compiled many fun experiments you can do at home. Feel free to explore! <\/p>\n<ul>\n<li>Learn more about the author, Ken Kuwako, <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=37\">here<\/a><\/li>\n<li>For requests (writing, lectures, workshops, TV supervision\/appearances), click <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">here<\/a><\/li>\n<li>Follow me on <a href=\"https:\/\/x.com\/kuwako\">X (formerly Twitter)<\/a> for updates!<\/li>\n<\/ul>\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=\"YouTube\" width=\"30\" height=\"21\" \/><\/a>Check out my experiment videos on the <a href=\"https:\/\/www.youtube.com\/user\/kkuwako?sub_confirmation=1\">Science Material Channel<\/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 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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>I am Ken Kuwako, your Science Trainer. Every day is an experiment. Back to Special Page The &#8220;Pop!&#8221; [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":60245,"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":[781],"tags":[],"class_list":["post-60318","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science-en"],"jetpack_featured_media_url":"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-08-5.42.51.jpeg","jetpack-related-posts":[{"id":56286,"url":"https:\/\/phys-edu.net\/wp\/?p=56286&lang=en","url_meta":{"origin":60318,"position":0},"title":"Ignite with Air Power! Feel the Explosive Force of Adiabatic Compression with the \u201cFire Piston\u201d Experiment","author":"\u6851\u5b50 \u7814","date":"2025\u5e7411\u670824\u65e5","format":false,"excerpt":"I'm Ken Kuwako, 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\/2020\/04\/ea6bc2fdf27af4d7094fe214421d9678.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/ea6bc2fdf27af4d7094fe214421d9678.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/ea6bc2fdf27af4d7094fe214421d9678.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/04\/ea6bc2fdf27af4d7094fe214421d9678.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":53945,"url":"https:\/\/phys-edu.net\/wp\/?p=53945&lang=en","url_meta":{"origin":60318,"position":1},"title":"The Science of the &#8216;Pop!&#8217;: Making Hydrogen Gas at Home","author":"\u6851\u5b50 \u7814","date":"2025\u5e7410\u67087\u65e5","format":false,"excerpt":"I'm Ken Kuwako, 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\/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":51914,"url":"https:\/\/phys-edu.net\/wp\/?p=51914&lang=en","url_meta":{"origin":60318,"position":2},"title":"The Fire Wizard! 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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