Learn what a chemical equation is and how to write one properly. See the parts of the equation and understand what they mean. What Is a Chemical Equation? Definition and Examples This entry was posted on October 7, 2021 by Anne Helmenstine (updated on March 8, 2022)
Get the temperature of the melting point of water in Celsius, Fahrenheit, and Kelvin. Learn about factors that affect the temperature. Melting Point of Water in Celsius, Fahrenheit, and Kelvin This entry was posted on October 6, 2021 by Anne Helmenstine (updated on January 25, 2023)
Get the definition of pKa in chemistry and understand how it relates to the acid dissociation constant Ka and the strength of acids. What Is pKa in Chemistry? Acid Dissociation Constant This entry was posted on October 5, 2021 by Anne Helmenstine (updated on March 25, 2023)
Perform the water to wine to milk to beer chemistry demonstration and learn about the reactions in this color change chemistry project. Water to Wine to Milk to Beer Chemistry Demonstration This entry was posted on October 3, 2021 by Anne Helmenstine (updated on January 19, 2022)
The dancing ghost science experiment is a fun Halloween project for kids that explores the effects of static electricity. Dancing Ghost Science Experiment for Halloween This entry was posted on October 2, 2021 by Anne Helmenstine (updated on October 4, 2021)
Learn what fluoride is, including the difference between fluoride and fluorine. Learn about fluoride uses and risks. What Is Fluoride? Fluoride vs Fluorine This entry was posted on September 30, 2021 by Anne Helmenstine (updated on January 15, 2025)
Get examples of household acids and bases. Learn the names of acids and bases in familiar home chemicals and see how to test their pH. Household Acids and Bases This entry was posted on September 29, 2021 by Anne Helmenstine (updated on July 15, 2023)
Use leaf chromatography to separate pigments in autumn leaves, spinach, or other plants. It's a fun science project suitable for all ages. Leaf Chromatography Experiment – Easy Paper Chromatography This entry was posted on September 28, 2021 by Anne Helmenstine (updated on November 18, 2025)
Learn how to make goldenrod paper and understand how it works. Make other color changing paper in any shade of the rainbow. How to Make Goldenrod Paper – Color Changing Paper This entry was posted on September 26, 2021 by Anne Helmenstine (updated on October 20, 2024)