Thermochemistry vocab

2. determining the changes in energy of a system by measuring the heat exchanged with the surroundings
6. change that occurs in a system when matter is transformed by a given chemical reaction, when all reactants and products are in their standard states.
11. the heat energy given out when one mole of a substance burns completely in oxygen.
13. the heat energy given out when one mole of a substance burns completely in oxygen.
14. the heat content of a system at constant pressure
17. where more energy is released then required to break bonds in initial reactants

1. amount of energy needed to change one mole of a substance from the solid phase to the liquid phase at constant temperature and pressure
3. device used to measure the heat flow of a chemical reaction or physical change
4. the study of heat changes that accompany chemical reactions and phase changes
5. in which a greater amount of energy is required to break the existing bond in the reactants
7. total amount of energy remains constant in an isolated system.
8. energy stored in the chemical bonds of a substance
9. amount of energy exerted when a force of one newton is applied over a displacement of one meter. amount of energy exerted when a force of one newton is applied over a displacement of one meter.
10. enthalpy needed to change one mole of liquid into a vapor
12. a unit of energy
15. amount of heat required for a single unit of mass of a substance to be raised by one degree of temperature.
16. energy an object has due to its motion
18. capacity to do work or produce heat