Thermochemistry Vocab

1. Energy required to break a bond (two words)
4. The signs of ΔH forward and ΔH reverses of a reaction are _________
6. Increasing temperature, surface area, and/or concentration increases ______ _____ (two words)
9. -ΔH and +ΔS
11. Reaction with a +ΔH
12. Standard unit of energy
13. Reaction that feels hot to the touch
16. Calculate ΔH, Bond Enthalpy Problem, ___-___
17. Heat energy transferred during a chemical reaction
18. _______ bonds is always an exothermic process
19. _______ bonds is always an endothermic process
22. The change in enthalpy between reactants and products is independent of steps taken to get from one to the other(two words)
23. Highest energy point in a chemical reaction (two words)

2. +ΔH and -ΔS
3. Calculate ΔH, Energy Diagram Problem, ___-___
5. Amount of heat needed to raise 1 g of substance 1 degree C, unit is J/g*C (two words)
7. ? = *-R (two words)
8. Lowers activation energy
10. Measure of average kinetic energy in a sample of matter
11. Measure of disorder in a system (how spread out energy is)
14. Energy transferred between to samples of matter
15. Endothermic reactions feel ________ to the touch
20. Unit of temperature that must be used in ΔG problems
21. According to Collision Theory, molecules must collide with sufficient energy and proper __________ to react