AQA Chemistry Paper 1 - C1 - Atoms

  • Created by: BCDM
  • Created on: 03-05-21 19:34

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  • 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.

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  • Atoms have a radius of about 0.1 nanometres (which is 0.00000000001 meters).

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  • 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…


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