C2 REVISION

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Across
  1. 2. a sub atomic particle found in the nucleus that has the same mass as a proton but no overall charge
  2. 5. make a solution neither acid nor alkali
  3. 8. the vertical column in the periodic table containing the noble gases
  4. 9. the minimum amount of energy particles must have to react
  5. 12. a balanced equation, including electrons that represents the reaction at one electrode during electrolysis
  6. 13. the central part of an atom
  7. 14. a compound, that reacts with a acid to neutralise it
  8. 15. a chemical bond in which oppositely charged electrons are held together by mutual attraction
Down
  1. 1. the vertical column in the periodic table containing the alkali metals
  2. 3. a substance that changes colour depending on the PH
  3. 4. a regular continuous structure of atoms or ions, for example in a crystal
  4. 6. applying a thin layer to an object by electrolysis
  5. 7. a weak force between simple molecules
  6. 10. a pair of electrons shared between two atoms
  7. 11. the vertical column in the periodic table containing the halogens