Thermochemistry

1. Celsius A temperature scale based on 0° for the freezing point of water and 100° for the boiling point of water
5. A substance that is present at the end of a chemical reaction
7. Chemical reaction in which heat is absorbed
10. An energy unit equal to the approximate amount of energy required to raise one gram of water by one degree Celsius or about 4.2 joules
12. heat capacity The energy required to raise the temperature of one gram of a substance by one degree Celsius
15. The process by which heat is transferred by movement of a heated fluid such as air or water
16. energy Heat energy
17. The process by which heat energy is transmitted through collisions between neighboring atoms or molecules
19. A substance that changes when it is combined with another substance in a chemical reaction

2. Chemical reaction in which heat is given off
3. of vaporization Conversion of a substance from the liquid or solid phase into the vapor phase
4. The study of energy changes that occur during chemical reactions and changes in state
6. energy The energy an object or particle has due to its motion
8. of fusion The quantity of heat necessary to change 1g of a solid to a liquid with no temperature change
9. energy The result of the movement of tiny particles called atoms, molecules or ions in solids, liquids and gases.
11. Energy that comes from a source and travels through space at the speed of light
13. The standard international unit of thermodynamic temperature
14. Unit of work or energy in the international system of units
18. The measurement of heat changes