Chapter 16 Crossword

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Across
  1. 2. substances to the left of the arrow
  2. 3. when an insoluble substance crystallizes out of a solution it is called a ______
  3. 8. when two or more elements or compounds unite to form one compound
  4. 9. one element displaces another from a compound
  5. 11. when an inhibitor is added to a food it is called _______
  6. 12. the sum of the average atomic masses of the atoms in a molecule
  7. 14. if thermal energy must be added during a reaction it is called ______
  8. 15. a substance that may tie up reactants or catalysts thus slowing down a reaction
  9. 16. the sum of the masses of the atoms or ions present in the formula of a compound
Down
  1. 1. reaction the breakdown of one substance into two or more other substances
  2. 4. shows changes that take place during a chemical reaction
  3. 5. when the positive part of one compound unites with the negative part of another compound
  4. 6. if thermal energy is released the reaction is called ______
  5. 7. numbers used in front of the symbols in formulas
  6. 10. something that speeds up a reaction without being permanently changed itself
  7. 13. substances to the right of the arrow