Write the number of atoms in water (H 2 O) and Nitrogen (N 2 )

The molecule that makes up water (H 2 O) has 3 atoms by combining 2 atoms of hydrogen and 1 atom of oxygen. Since it is made of atoms of different types, it is called a compound. The molecule that makes up nitrogen (N 2 ) has 2 atoms of nitrogen. Since it is made up of atoms of the same type, it is called an element.

Write the number of atoms in water (H 2 O) and Nitrogen (N 2 )

The molecule that makes up water (H 2 O) has 3 atoms by combining 2 atoms of hydrogen and 1 atom of oxygen. Since it is made of atoms of different types, it is called a compound. The molecule that makes up nitrogen (N 2 ) has 2 atoms of nitrogen. Since it is made up of atoms of the same type, it is called an element.

Anything that has weight and occupies space is called matter. All matter is made up of tiny particles called atoms and molecules. Matter can be present in three forms which are solid, liquid and gas.