Learning Resource

Separation of Mixtures and Compounds

Science · Class 7, Class 8

The universe is made up of atoms, the tiny building blocks of matter. The computer screen is made up of atoms and so are your eyes and the rest of your body! In the last 110 years, scientists have discovered that atoms themselves are made up of even smaller particles: an atom has a central nucleus made up of protons and neutrons, and surrounded by electrons.