Chemistry Review - Unit 4

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Across
  1. 6. a reaction with only one reactant
  2. 8. the numbers that you use to balance an equation
  3. 9. a substance that lowers activation energy
  4. 11. balanced equations follow the law of conservation of ____.
  5. 15. measure how many particles are in a solution
  6. 17. the substance that you start with in a chemical reaction
  7. 18. a reaction that releases energy
Down
  1. 1. the substances that you end with in a chemical reaction
  2. 2. a reaction that always contains oxygen, carbon dioxide, and water
  3. 3. the replacement reaction with two compounds on each side
  4. 4. increasing this makes particles collide harder and react faster
  5. 5. a reaction that absorbs energy
  6. 7. the theory that tells us what reactants have to do to react
  7. 10. the replacement reaction with one element and one compound on both sides
  8. 12. a reaction with only one product
  9. 13. the amount of energy particles have to have in order to react
  10. 14. an equation with the same number of atoms, of each element, on both sides
  11. 16. making particles of reactants smaller will _____ surface are