S3 Chemistry

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Across
  1. 2. Relative Atomic Mass
  2. 6. Measured in grams
  3. 7. Atoms of the same element with the same atomic number but different mass numbers
  4. 8. Negative subatomic particle
  5. 10. Bonding that occurs between two non-metals
  6. 12. Positive subatomic particle
Down
  1. 1. Gram Formula Mass
  2. 3. Make up everything
  3. 4. Represented by n in the equation n=m/GFM
  4. 5. Neutral subatomic particle
  5. 6. Made up of a small number of atoms
  6. 7. Bonding that occurs between a metal and a non-metal
  7. 9. Made up of only one type of atom
  8. 11. An atom when it has lost or gained electrons