Chemistry Revision

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Across
  1. 3. A measure of how fast a reaction is
  2. 5. Given as the symbol "H"
  3. 7. AB + CD --> AD + CB, where one product is a solid
  4. 8. Reaction that absorbs energy
Down
  1. 1. The reaction between a more reactive metal and a less reactive metal solution.
  2. 2. energy The energy required for a reaction to proceed
  3. 4. Reaction that releases energy
  4. 6. A negative ion