Cheimcal reactions cross word

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Across
  1. 1. formed by a chemical change or reaction
  2. 6. starting material in a reaction that undergo change in chemical to make an new product
  3. 9. replaces 1 element in a compound
  4. 11. when2 2 or more reactants or substances combine to make a new product
Down
  1. 2. when 2 or more compounds combine to form 1 compound
  2. 3. a substance that releases a large amount of energy when reacted with oxygen
  3. 4. when a compound breaks down into 2 simpler substances
  4. 5. when an element displaces or pushes away and element that isn't as reactive
  5. 7. 2 inonic compounds exchange making 2 new ones
  6. 8. when 2 or more reactants convert into 1 or more different products
  7. 10. 2 or more elements or compounds combine to make a more complex element or compound