Chemical Reaction and pH Crossword

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Across
  1. 5. Substance with a pH greater than 7
  2. 6. A reaction that absorbs heat from its surroundings
  3. 7. A type of chemical reaction where substances combine to form a more complex product
  4. 8. A number that measures how acidic or basic a substance is
  5. 10. A substance that increases the rate of a chemical reaction without being consumed
Down
  1. 1. A reaction that releases heat
  2. 2. The substances present before a chemical reaction
  3. 3. The products of an acid and a base reaction: a salt and this
  4. 4. A reaction where a compound breaks down into simpler substances
  5. 9. Substance with a pH less than 7