Together, they make the substance, calcium phosphate. Sidewalk chalk is made from calcium and sulfate, which makes calcium sulfate. One of the most common chemicals connected to calcium is called ...

Thermal decomposition is a chemical reaction that happens when a compound ... these can be elements or compounds. So, if we have calcium carbonate and we heat it, it breaks down to produce calcium ...

The rainbow film on the surface of tea results from a reaction between the polyphenols in the tea leaves and the calcium carbonate present in the water. The harder the water, the more calcium ...

This fascinating chemical reaction demonstrates acid-base interactions ... and how differently the colors behave depending on which temperature water is added first. The eggshell is made of calcium ...