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October 2025

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2025年10月7日 / Last updated : 2025年10月7日 桑子 研 Science

The Science of the ‘Pop!’: Making Hydrogen Gas at Home

I’m Ken Kuwako, your Science Trainer. Every day is an experiment. Have you ever heard of a “clean gas that turns into water when burned”—a substance that sounds like magic? Well, that’s hydrogen! This time, let’s dive into an exciting chemistry experiment to generate this potential fuel of the future using simple, everyday materials! Challenge […]

2025年10月6日 / Last updated : 2025年10月6日 桑子 研 Science

Unleash Your Inner Superhero: Become the ‘Electric Human’ and Light Up a Bulb!

I’m Ken Kuwako, your Science Trainer. Every day is an experiment. The Electric Human Static electricity is one of the most common phenomena we encounter in our daily lives. For example, have you ever felt a ‘crackle’ when taking off a sweater on a cold day, or a ‘zap’ when touching a doorknob? All of […]

2025年10月6日 / Last updated : 2025年10月6日 桑子 研 Science

Invisible Intrigue: The 3 Clues That Reveal Carbon Dioxide’s True Identity

I’m Ken Kuwako, your Science Trainer. Every day is an experiment. The fizz in soda pop, the bubbles that dissolve a bath bomb—our everyday lives are full of mysterious bubbles. The hidden identity of many of these bubbles is a gas called carbon dioxide (CO 2 ​ ). Would you like to try a science […]

2025年10月5日 / Last updated : 2025年10月5日 桑子 研 Science

The Pro’s Guide: Turn Drugstore Peroxide into Pure Oxygen in Minutes (Tips Not Found in Textbooks!)

I’m Ken Kuwako, your Science Trainer! Every Day is an Experiment. We all know hydrogen peroxide as that common disinfectant, “Oxydol.” But did you know you can actually extract oxygen—the gas vital for our very existence—from this liquid? Today, I’m sharing a classic science experiment, often done in middle school, that uses simple, everyday materials […]

2025年10月5日 / Last updated : 2025年10月5日 桑子 研 Science

The Secret Language of Scientists: Find Out What Your Measurements Really Mean!

I’m Ken Kuwako, your Science Trainer. Every day is an experiment! You divide a number on your calculator and get “7.14285714…”. On a test, how many of those digits should you actually write down? In elementary and high school math, you’re usually told something like, “Round to the nearest hundredth.” But in the world of […]

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運営:桑子研(くわこ けん)
科学の楽しさや不思議、感動を多くの人に届けていきたい。サイエンストレーナーとしてテレビ番組の科学監修・出演、実験教室、科学本執筆なども行っています。

Author: Ken Kuwako
My mission is to share the joy, wonder, and excitement of science with as many people as possible. As a Science Trainer, I stay busy supervising and appearing on science-themed TV programs, hosting hands-on experiment workshops, and authoring science books.

Recent posts

[Shocking!] Can You “Keep a Bird” with Just One Straw!? A Real Water Whistle Experiment at Home

2026年2月16日

Make Your Own Straw Wind Instrument with Kids! Snip, Snip—Why Does Cutting It Make the Sound Higher?

2026年2月15日

Why Does an Ambulance Sound Change? Uncover the Doppler Effect with Scratch!

2026年2月14日

Secrets of Static Electricity! Try This Cool Experiment with Styrofoam and Paper Bits (Dielectric Polarization)

2026年2月13日

Make It Snow in a Test Tube! Sparkling Crystal Christmas at Home (Ammonium Chloride Recrystallization Experiment)

2026年2月12日

Where Did the Electricity Go? Uncover the Emotional “V-Shaped Graph” of Neutralization! (Barium Hydroxide × Sulfuric Acid Experiment)

2026年2月11日

The Secret of Fizzy Reactions! Learn Chemical Changes with Citric Acid × Baking Soda (Endothermic Reaction)

2026年2月10日

Learn How Engines Work with a Shocking “Pop!” — The Secret of Alcohol Explosion Experiments (First Law of Thermodynamics)

2026年2月9日

What Happens When Acid Meets Base? Create the Crystals of Neutralization — A Visible Chemistry Drama (HCl & NaOH Experiment)

2026年2月8日

What Happens If You Jump on a 300 km/h Bullet Train? The Half Super Ball Experiment Explains It!

2026年2月7日

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