Chapter 7 Physical Science

12345678910
Across
  1. 3. a catalyst made by a living thing
  2. 5. a substance that participates in a chemical reaction
  3. 6. a substance that forms in a chemical reaction
  4. 8. these types of reactions produce more energy than they absorb
  5. 9. in any redox reaction this is the substance that loses electrons
  6. 10. these reactions are where organic compounds react with oxygen
Down
  1. 1. an atom or group of atoms that has one unpaired electron
  2. 2. the reaction where substances break apart
  3. 4. a substance that speeds up or slows down a reaction but isn't changed by the reaction
  4. 7. a number that shows the relative amount of a substance in a reaction