Chemical Reaction Crossword

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Across
  1. 3. Reaction that gives out energy in the form of heat
  2. 5. Substance that speeds up a reaction without being consumed
  3. 8. Reaction between an acid and base forming water and salts
  4. 9. Reaction in which one element replaces another within a compound
  5. 10. Chemical link that holds molecules together
  6. 11. Reaction that takes in energy in the form of heat
  7. 12. Gain of oxygen by a substance during a chemical reaction
Down
  1. 1. Energy is the energy needed to start a reaction
  2. 2. Factor affecting the rate of reactions
  3. 4. Substance that participates in a chemical reaction
  4. 6. Chemical reaction in which a single compound breaks down into two or more elements or compounds
  5. 7. Solid that forms a solution during a chemical reaction