Chapter 10 Chemistry Terms

5. of reaction The Heat of Reaction is the change in the enthalpy of a chemical reaction that occurs at a constant pressure
7. Vaporization of a liquid below its boiling point
9. A space entirely devoid of matter
11. The direct vaporization of a sold by heating without passing through the liquid state
12. Different forms of the same element in the same physical state
14. process Describes processes that release heat energy
17. process Describes processes that absorb heat energy
18. A piece of a homogeneous solid substance having a natural geometrically regular form with symmetrically arranged plane faces.
20. point The temperature at which the vapor pressure of a liquid is equal to the applied pressure; also the condensation point
22. diagram Diagram that shows equilibrium temperature-pressure relationships for different phases of a substance.

1. capacity The amount of heat required to raise the temperature of a body (of any mass) one degree Celsius
2. chemistry The study of heat in chemistry
3. A unit of energy in the SI system
4. theory The body of theory that explains the physical properties of matter in terms of the motions of its constituent particles.
6. solid A non crystalline solid with no well-defined ordered structure.
8. In physics and chemistry, the conversion of a solid or a liquid into a gas
10. point The temperature and pressure at which the solid, liquid, and vapor phases of a pure substance can coexist in equilibrium
13. heat capacity The amount of heat required to raise the temperature of one gram of substance one degree Celsius
15. The heat content of a specific amount of substance
16. point The temperature at which liquid and solid coexist in equilibrium; also the freezing point.
19. of conservation of energy Energy cannot be created or destroyed; it may be changed from one form to another
21. pressure The pressure exerted by a gas