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Crystals

By Janice VanCleave

Crystals are solids with particles arranged in a regular, repeating pattern with flat surfaces. Most solids are crystalline solids. The crystal diagram shown is of quartz, which is made of silicon dioxide, the same chemical found in sand.  Without any impurities, quartz is colorless and transparent. Impurities, such as iron,  give quartz crystals a pink […]

Filed Under: Chemistry, General Science Tagged With: crystal unit cells, crystals, halite crystals, ice crystals, Me on a glacier, pink quartz, quartz

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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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