Find out how much a cloud weighs, why clouds don't fall even though they are heavy, and how to calculate the weight of a cloud.
Monthly Archives: April 2020
Epsom salt crystals are among the safest and easiest crystals to grow. The natural crystals are clear, but they readily accept dye from food coloring. Here’s what you need to know to grow these crystals yourself. Epsom Salt Crystal Materials All you need is Epsom salt, water, and a bit […]
How to Grow Epsom Salt Crystals
Get the solution definition in chemistry. See examples of types of chemical solutions and learn about their shared properties.
Solution Definition in Chemistry
Most of the elements of the periodic table are solids, a few are gases, and there are only two liquid elements at room temperature and pressure. A total of six liquid elements exist between room temperature and body temperature. There are eight liquid elements, if you include predictions for recently-discovered […]
Liquid Elements on the Periodic Table
The potassium permanganate volcano is a classic chemistry demonstration that produces smoke, colored flames and sparks, a glow resembling lava, and colored ash. This type of chemical volcano captivates students while illustrating principles of redox reactions, oxidation, exothermic reactions, the effect of surface area on reaction rate, decomposition reactions, and […]
Potassium Permanganate Volcano
Learn what pH, pKa, pKb, Ka, and Kb are in chemistry, how they are related, and how to calculate them using simple formulas.
pH, pKa, Ka, pKb, and Kb in Chemistry
Learn what phosphorescence is, how it works, and how it differs from fluorescence. Get examples of phosphorescent objects and materials.
Phosphorescence – Definition, Examples, Applications
It’s true the sky can turn green before a tornado. As a Nebraska native, I’ve witnessed the phenomenon firsthand numerous times. While thunderstorm clouds may appear green or yellow before a tornado, they may also turn these colors before a hail storm. It’s also possible for the sky to turn […]
Why Is the Sky Green Before a Tornado?
4 It’s easy to make hydrogen gas at home or in a lab using common chemicals and everyday materials. Once you have the gas, you can use it for a variety of interesting science projects. Of course, you’re not “making” hydrogen, since it’s an element. It is produced by chemical reactions […]