6.2 ~ "Chemical Reactions"

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Across
  1. 3. Chemical reaction in which heat energy is absorbed
  2. 6. The starting substances in a chemical reaction (on the left side of the arrow in a chemical equation)
  3. 9. A substance that lowers the activation energy needed to start a chemical reaction
  4. 10. Chemical reaction in which heat energy is released
  5. 11. These are broken and/or formed during chemical reactions
Down
  1. 1. The minimum amount of energy needed for reactants to form products in a chemical reaction is the ______ energy
  2. 2. The number written in front of a reactant or product in a chemical equation to balance the equation
  3. 4. Chemical equations have to balance because matter cannot be created or _________
  4. 5. The substances formed during a chemical reaction (on the right side of the arrow in a chemical equation)
  5. 7. Special proteins that speed up the rate of chemical reactions in biological processes
  6. 8. The process by which atoms or groups of atoms in substances are reorganized into different substances is a chemical _______