Chemical Bro's and sisters Introdiction crossword

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Across
  1. 8. A reaction where one compound breaks down into simpler substances (13)
  2. 10. The total exposed area of a solid that affects reaction speed (11)
  3. 11. An insoluble solid formed when two solutions react (11)
  4. 12. A substance that speeds up a reaction without being used up (8)
Down
  1. 1. The process of forming solid crystals from a solution (15)
  2. 2. How easily a metal takes part in a chemical reaction (10)
  3. 3. A method used to separate an insoluble solid from a liquid (10)
  4. 4. The amount of solute dissolved in a given volume of solution (13)
  5. 5. A symbolic way of showing reactants changing into products (8)
  6. 6. The principle that mass is neither created nor destroyed in a reaction (12)
  7. 7. A reaction where a more reactive metal replaces a less reactive one (12)
  8. 9. The process of removing a solvent to leave a dissolved solid behind (11)