Thermochemistry

2. When heat energy is lost
5. the amount of energy needed to change one mole of a substance from the solid phase to the liquid phase at constant temperature and pressure
7. The total heat energy it takes to make the temperature of g of the substance to Celsius.
10. the amount of heat required at a pressure of 1 standard atmosphere to raise the temperature of 1 gram of water 1° Celsius
13. Heat energy being absorbed by the things around it.
14. the sum of the internal energy and the product of the pressure and volume of a thermodynamic system.
15. the heat absorbed by one mole of that substance as it is converted from a liquid to a gas.
17. a collection of objects that can be identified
18. the heat absorbed when a substance dissolves

1. everything happening around the reaction.
3. the study of changes of states and heat transferring from chemical reactions.
4. The main unit of energy
6. the changes in energy of a system by measuring the heat exchanged with the surroundings.
8. The ability to do work
9. Energy being transferred from one object to another with different temperatures.
11. a tool used to measure the amount of heat involved in a chemical reaction.
12. equation heat energy equals mass times the specific heat times the change in temperature
16. the amount of heat to be supplied to an object to produce a unit change in its temperature.