Energy Change & Rates of Reactions

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Across
  1. 4. Heat of reaction for burning one mole of a substance.
  2. 7. Chemical or physical change occurs "naturally".
  3. 9. C value in certain equations.
  4. 14. Mathematical expression obtained by comparing reaction rates with reactant concentrations.
  5. 15. To separate a substance into simpler compounds. Type of Change.
  6. 18. Minimum energy that a reactant molecule must possess to have a successful reaction.
  7. 19. The law of ___ states energy cannot be created or destroyed.
  8. 20. A Branch of chemistry, that deals with the relations of heat and chemical reactions.
Down
  1. 1. A theory that chemical reactions can occur only if the reactants collide with proper orientation.
  2. 2. When the rate is increasing.
  3. 3. Thermodynamic equation used for calculating changes in the Gibbs energy of a system.
  4. 5. Total amount of thermal energy in a system or substance.
  5. 6. A substance that can alter the rate of a chemical reaction.
  6. 7. The reaction or substance changing.
  7. 8. An equation that is needed to be successful with Hess's Law.
  8. 10. Measurement of the heat flow out of or into the system
  9. 11. When two molecules combine to form a larger molecule and a small molecule.
  10. 12. To make (a liquid) thinner or less strong by adding another liquid.
  11. 13. A measure of the molecular disorder, or randomness, of a system.
  12. 16. Multi-step process used when a reaction cannot be done in a calorimeter.
  13. 17. ΔH is greater than Zero.