chemistry vocab

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Across
  1. 5. low pH
  2. 6. dissolves ither substances
  3. 9. substance and natural laws
  4. 10. high pH
  5. 12. gives off heat
Down
  1. 1. absorbs heat
  2. 2. reduces surface tenssion when added to a liquid
  3. 3. mixes with water
  4. 4. flammable
  5. 7. catches fire
  6. 8. process of oxidizing
  7. 11. measure of acids