Y11 Chem Summary

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Across
  1. 1. the name of the outermost shell
  2. 3. the type of ion that characterises bases
  3. 4. the name of a negative ion
  4. 6. a substance made up of two or more different types of atom chemically bonded
  5. 7. the starting materials in a chemical reaction
  6. 8. formed when an atom gains or loses electrons
  7. 11. the elements or compounds produced by a chemical reaction
  8. 12. what's the name of the compound CO2
Down
  1. 2. the type of ion that characterises acids
  2. 5. when the H+ ions in an acid and OH- ions in a base balance each other out to form H2O
  3. 9. the negatively charged particles in an atom
  4. 10. the positively charged particles in an atom