Chemical Reactions

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Across
  1. 4. used to extract metals
  2. 8. loss of electrons
  3. 9. absorbs energy
  4. 10. produces salt and water
  5. 11. releases heat
  6. 12. has a pH above 7
  7. 13. join to make polymers
  8. 16. prevents rusting
  9. 17. biological catalyst
  10. 19. positive ions
Down
  1. 1. acid + base
  2. 2. breaks down glucose
  3. 3. joins monomers
  4. 5. shows pH
  5. 6. forms simper substances
  6. 7. wears away metal
  7. 14. extracts metal from ore
  8. 15. speeds up reactions
  9. 18. negative ions