Chemistry - yr 10

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Across
  1. 3. A substance that absorbs protons.
  2. 4. Metal and non - metal ions in a lattice
  3. 7. inert gases
  4. 8. A substance that contributes Hydrogen ions.
  5. 9. An atom which has gained or lost electrons.
  6. 12. Reactive gases normally form diatomic molecules.
  7. 15. List of elements.
  8. 16. Reactions that absorb heat
  9. 17. X + Y -> XY
Down
  1. 1. One type of double displacement reaction
  2. 2. XY -> X + Y
  3. 4. XY +Z -> XZ + Y
  4. 5. Atoms which differ in the number of neutrons.
  5. 6. All equations must be:
  6. 10. A chemical reaction in which a substance burns in oxygen gas.
  7. 11. Number of protons plus neutrons
  8. 13. An insoluble solid.
  9. 14. Chemical properties are due to