Most natural diamonds have ages between 1 billion and 3.5 billion years. Diamond is the only gem with a single element. Do ...

While we refer to substances by their common names in everyday life, all these substances have a chemical name and a chemical formula that scientists and researchers use. The system of chemical naming ...

A compound is a substance that is formed when two or more different chemical elements bond together in a fixed ratio, like water (H₂O) from hydrogen and oxygen or salt (NaCl) from sodium and chlorine.

A lead-acid battery is a type of rechargeable battery, invented in 1859. It uses lead plates (electrodes) submerged in ...