THERMOCHEMISTRY

2. : The measure of the spontaneous dispersal of energy at a specific temperature: how much energy is spread out, or how widely spread out energy becomes
6. : Equivalent to heat (Q) under constant pressure
9. LAW : States that enthalpy changes of reactions are additive
11. : Liquid to solid
12. LAW : Energy spontaneously disperses from being localized to becoming spread out if it is not hindered from doing so
14. : Processes in which systems absorb heat; delta Q >0
17. : System releases heat (deltaQ<0)
19. : The process of measuring transferred heat
20. : The pressure of the system is constant

1. DIAGRAMS : Graphs that show the temperatures and pressures at which a substance will be thermodynamically stable in a particular phase
3. : Study of energy changes involved in physical and chemical changes
4. SYSTEM : Exchange of energy, not matter
5. : Experience no change in volume
7. POINT : Phase boundary that separates the solid and liquid phases terminates at a point called the critical point
8. SYSTEM : The system cannot exchange energy (heat and work) or matter with the surroundings; for example an insulated bomb calorimeter
10. LAW : Energy cannot be created or destroyed, only converted from one form to another
13. LAW : Implies that objects are in thermal equilibrium only when their temperatures are equal
15. : The ability to do work
16. : Occur when no heat is exchanged between the system and the environment; thus, the thermal energy of the system is constant through the process
18. : A specific type of vaporization that occurs only under certain conditions