How Atom Worked? (Chemistry)

Atoms themselves are made up of three kinds of smaller particles, called protons (which are positively charged), neutrons (which have no charge) and electrons (which are negatively charged). The protons and neutrons are in the middle of the atom. They are called the nucleus. 

Go check: https://www.youtube.com/watch?v=EMDrb2LqL7E for further information