Try the chemical traffic light experiment. Learn how the color changes work and whether you can substitute chemicals. Chemical Traffic Light Experiment This entry was posted on October 31, 2021 by Anne Helmenstine (updated on January 19, 2023)
Make cool Halloween jack o lanterns using chemistry to up the excitement. Make colored flames, smoke, and glow in the dark pumpkins. Cool Halloween Jack o Lanterns This entry was posted on October 30, 2021 by Anne Helmenstine (updated on September 22, 2023)
Whip eggs whites in a copper bowl for peaks that maintain their shape and don't weep or clump. Here's a look at the chemistry. Why Whip Egg Whites in a Copper Bowl This entry was posted on October 28, 2021 by Anne Helmenstine (updated on November 1, 2021)
Learn what cream of tartar is in cooking and how to substitute it in recipes. Get facts about the chemistry of potassium bitartrate. Cream of Tartar – What It is and How to ... This entry was posted on October 27, 2021 by Anne Helmenstine (updated on November 27, 2021)
Learn how to make buttermilk using simple kitchen ingredients. Learn how buttermilk works in recipes and whether or not you can freeze it. How to Make Buttermilk – Easy Recipes This entry was posted on October 26, 2021 by Anne Helmenstine (updated on November 1, 2021)
Learn about the thermite reaction and see how to perform this reaction as an exothermic chemistry demonstration. Thermite Reaction Chemistry Demonstration This entry was posted on October 24, 2021 by Anne Helmenstine (updated on December 2, 2021)
Learn the difference between baking soda and baking powder and why you can't always substitute between these leavening agents. Baking Soda vs Baking Powder – What’s the Difference? This entry was posted on October 23, 2021 by Anne Helmenstine (updated on November 27, 2021)
Learn how to clean silver at home using chemistry. Remove tarnish and polish sterling silver without harming your items. How to Clean Silver – Remove Tarnish Using Chemistry This entry was posted on October 21, 2021 by Anne Helmenstine (updated on January 1, 2022)
Learn about refraction in physics. Get its definition and explore Snell's law and the index of refraction. Get examples for light and sound. Refraction – Definition, Refractive Index, Snell’s Law This entry was posted on October 20, 2021 by Anne Helmenstine (updated on October 25, 2021)