Calcium is an element that is softer than aluminum but harder than sodium, and it’s less chemically reactive than alkaline metals. Have you ever looked inside of a water pipe? The hard, white crust you see is probably calcium or magnesium deposits (especially if you have “hard” water). When calcium comes in contact with air, it forms an oxide coating which protects it from further corrosion.
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It’s important that you DO NOT EAT ANYTHING in this lab. This is a CHEMISTRY LAB.
C1000 Experiments: 124, 125, 126
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