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Compounds: Hydrates

By Janice VanCleave

Chemistry Facts: Hydrates are chemicals that have water as part of their structure. If these chemical lose some or all of this water they change in appearance. Cobalt Chloride is an example of a chemical hydrate.When cobalt chloride is hydrated (having water) its color is pink.When cobalt chloride is dehydrated (loses water) its color is […]

Filed Under: Chemistry Tagged With: hydrates

Tips for Teaching Chemistry

By Janice VanCleave

Hydrate Art

Have you ever used art to teach chemistry? I have! In fact once I used special paper that changed color with changes in the humidity (amount of moisture in the air.) The paper was blue when the air was dry and pink when the humidity increased due to an increase in the moisture in the […]

Filed Under: Chemistry Tagged With: hydrates, Teaching Tips

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Welcome to Janice’s Science Extravaganza!

The spoon hanging from the string vibrates when struck and these vibrations are transmitted through the string and the sound is amplified by the plastic cups. ABOUT ME: Hi, I am Janice VanCleave, author of 50 best-selling science experiment books for children ages 4 through high school. I taught science for 27 years. MORE.....

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