Question

what is an element ? ​

Answer 1

Element: An element is a substance which cannot be split up into two or more simpler substances by the usual chemical methods of applying of heat, light or electric energy.

or

An element is a substance that is made entirely from one type of atom.

For example, the element hydrogen is made from atoms containing a single proton and a single electron. If you change the number of protons an atom has, you change the type of element it is.

Answer 2

Answer:

chemistry, an element is a pure substance consisting only of atoms that all have the same numbers of protons in their atomic nuclei. Unlike chemical compounds, chemical elements cannot be broken down into simpler substances by chemical means.