Chemical Elements Updated!
A chemical element is a fundamental substance of the material world, one that cannot be divided into a more elementary substance by chemical processes. Each element has an identity—for example, gold consists of only gold atoms, but a gold atom is unlike any other atom in that it can be split but the subatomic particles (electrons, protons, and neutrons) that constitute a gold atom are not gold. It could be said that subatomic particles are generic, interchangeable while atoms, on the other hand, have an identity and constitute the identity of an element.
Many elements—such as iron (Fe), copper (Cu), aluminum (Al), sodium (Na), potassium (K), and lead (Pb)—are familiar everyday substances, but many are unfamiliar, either because they are...Read more