Across
- 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.
Down
- 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