Chemical Reactions and Equations

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