- Created by: BCDM
- Created on: 03-05-21 19:34
- All substances are made of atoms. They are really tiny - too small to see, even with a microscope. They are so small, that a 50p coin contains 77,400,000,000,000,000,000,000 of them, which is quite a lot.
- Atoms have a radius of about 0.1 nanometres (which is 0.00000000001 meters).
- ELECTRONS - Electrons move around the nulceus in electron shells, they are negative charged and have a very small relative mass. The volume of their orbits determine the size of the atom.
- THE NUCLEUS - The…