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Across 7. --- is freezing 8. Two words for Cp 10. Energy needed to boil 1 mole 13. Ability to do work and measured by Joules 15. Feels cool and absorb heat 18. Speed up reactions by lowering the Ea 19. Stored energy 21. Energy of motion 22. Measure of the average kinetic energy of random motions of particles in a substance 23. Shows energy of reactants, products, and activated complex 24. Another unit of Heat other than Joules

Down 1. 1 Calorie = 4 ??? 2. 1,000 Joule 3. Total energy content of a system 4. Specific heat 5. Energy needed to start a reaction 6. Energy possessed by large particles 9. Measure of disorder of a system 11. Measure of the total amount of energy transferred from an object of high temp to one of low temp 12. Total enthalpy change in a reaction is the same whether it takes place in one step or in several steps 14. --- is boiling 16. Used to measure the amount of heat absorbed or released 17. Energy needed to melt 1 mole 18. Measurement of heat changes for physical & chemical processes 20. Feels hot and emit heat