chemistry

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Across
  1. 5. substance that changes during a reaction
  2. 6. a process requiring the absorption of heat
  3. 7. changes affecting the form of a substance
  4. 9. the action or process of precipitating a substance from a solution
  5. 10. rapid chemical combination of a substance with oxygen
Down
  1. 1. substance formed as a result of a chemical reaction
  2. 2. process accompanied by the release of heat
  3. 3. when a chemical substance combines
  4. 4. a chemical reaction in which an acid and base react with each other
  5. 8. smallest particle