Choice Board

Edit Answers
123456789101112131415
Across
  1. 2. a substance/material used to decrease the rate of a chemical reaction
  2. 4. how fast a chemical reaction is
  3. 6. the minimum amount of energy needed to start a chemical reaction
  4. 8. a biological substance that acts like a catalyst and speeds chemical reactions up
  5. 12. a characteristic changes, not what the object is made out of
  6. 13. the chemical before you do the reaction
  7. 14. a chemical reaction that absorbs energy
  8. 15. the transfer of heat through the movement of fluids
Down
  1. 1. changes what an object is made out of
  2. 3. a substance that helps a substance resist a pH change
  3. 5. the chemicals after the reaction is complete
  4. 7. the process of heat transfer through direct contact between particles of matter
  5. 9. a chemical reaction that releases energy
  6. 10. a number place in front of a formula to balance a chemical equation
  7. 11. he act of combining element to form something new