Question

sodium is called an element and water is called a compound why​

Answer 1

Answer:

Water is also a compound because it is made from more than one kind of element (oxygen and hydrogen). ... Something like table salt (NaCl) is a compound because it is made from more than one kind of element (sodium and chlorine), but it is not a molecule because the bond that holds NaCl together is an ionic bond.

Answer 2

Answer:

An element is regarded as pure because it is only composed of a single type of atom.

e.g. Sodium is only composed of ‘Na’ atoms

A compound contains two or more different types of atoms bonded together.

e.g. Water has 'H' and 'O' in a fixed ratio (2:1)