Chemical Reactions and Equations

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Across
  1. 5. a reaction where two reactants combine to form a single product
  2. 6. bags of chips are usually filled with _________ gas
  3. 7. a substance that undergoes a chemical change in a reaction
  4. 8. a substance which turns from green to white when heated
  5. 10. most reactive metal
  6. 11. during a double displacement reaction, _____ are exchanged
  7. 12. corrosion and rancidity are _______ reactions
  8. 13. common name of calcium hydroxide
  9. 15. 2Mg+O2 = 2MgO is a _______ reaction
  10. 16. acid-metal reactions are ________ reactions
Down
  1. 1. an insoluble solid formed during a double displacement reaction
  2. 2. gas evolved when an acid reacts with a metal
  3. 3. a magnesium ribbon burns in _____ colour
  4. 4. reaction where light causes the breakdown of a subtance
  5. 5. substance that speeds up a chemical reaction
  6. 9. brown gas produced during the decomposition of lead nitrate
  7. 14. CaO + H20 is a ______ reaction (exothermic/endothermic)