Chemistry revision

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Across
  1. 3. Metal carbonate + a salt + carbon dioxide + water
  2. 4. as a neutral atom this element has 16 electrons
  3. 5. aspirin will work faster if it is
  4. 8. speeds up a chemical reaction without being changed
  5. 11. what type of reaction is ABC A + B + C
  6. 12. evidence of a chemical reaction that you can hear
  7. 16. CO
  8. 17. effect of cooling on rate of reaction
  9. 18. state of matter where atoms are very close together
Down
  1. 1. number of electrons in a full second shell
  2. 2. in the periodic table, going down a group metals become more or less reactive
  3. 4. what type of reaction is A + B AB
  4. 6. potatoes cook faster if cut into more pieces due to an increase in
  5. 7. this element has 8 protons
  6. 8. this element has the atomic number 29
  7. 9. which side of the reaction are the reactants on
  8. 10. OH
  9. 13. effect of heating on a rate of reaction
  10. 14. a water molecule has one oxygen atoms and 2 of what element
  11. 15. state of a substance dissolved in water