Module 4 crossword

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Across
  1. 2. when the total chemical energy of the products of a chemical reaction is less than the total chemical energy of the reactants
  2. 3. heat given off when one mole of substance is burnt completely in excess of oxygen
  3. 5. the law of ____ of energy states that energy cannot be created nor destroyed it can only change form
  4. 8. a type of equation that indicates the change in energy in a reaction
  5. 9. speeds up the reaction but isn't consumed itself
Down
  1. 1. in endothermic reactions energy is _____ from the surroundings
  2. 2. Hp < Hr
  3. 4. where energy enters after leaving the system
  4. 6. what type of catalyst lowers the activation energy
  5. 7. the chemical energy of a substance