Chemistry Review!

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Across
  1. 4. the common name of calcium carbonate
  2. 6. elements of group 7
  3. 8. the other name for calcium hydroxide
  4. 9. catalysts in the human body
  5. 11. substances that lowers activation energy of reactions
  6. 12. the gas that relits a glowing splint
  7. 13. the oxidation of iron
Down
  1. 1. A reactive metal replacing a less reactive one
  2. 2. reactions that give out a lot of heat
  3. 3. table sugar
  4. 5. the least reactive metal in series
  5. 7. susbtances that react in a chemical reaction
  6. 10. the acid in car batteries