Unit 3 Rate of Reaction Quiz 1

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Across
  1. 7. number of particles per unit volume; higher means faster reaction
  2. 8. the minimum energy needed for a reaction to start
  3. 10. the change in amount of reactant or product per unit time
  4. 13. a graph showing energy changes during a reaction
  5. 15. a cell where hydrogen and oxygen combine to produce electricity and water
  6. 16. a collision with enough energy and correct orientation to form product
  7. 17. a substance that speeds up a reaction but is not used up
Down
  1. 1. total area exposed; smaller pieces react faster
  2. 2. a reaction that releases heat to the surroundings
  3. 3. loss of electrons during a chemical reaction
  4. 4. decomposition of an ionic compound using electricity
  5. 5. energy needed to break one mole of bonds in gaseous molecules
  6. 6. a fuel such as coal, oil, or gas formed from ancient organisms
  7. 9. a radioactive substance that releases large energy through nuclear reactions
  8. 11. gain of electrons during a chemical reaction
  9. 12. a device that converts chemical energy into electrical energy using two metals and an electrolyte
  10. 14. a reaction that absorbs heat from the surroundings