Chemistry Crackers!

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Across
  1. 6. A solid that forms from a solution during a chemical reaction
  2. 8. Substance that speeds up a reaction without being used up
  3. 9. A reaction where a more reactive element replaces a less reactive one
  4. 10. Loss of electrons during a reaction
Down
  1. 1. A reaction that releases heat
  2. 2. Substances formed as a result of a chemical reaction
  3. 3. Gain of electrons during a reaction
  4. 4. A reaction that absorbs heat
  5. 5. Substances that start a chemical reaction
  6. 7. A symbolic representation of a chemical reaction