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Flashcards in Chapter 15 Deck (19):
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The ability to do work or produce heat

Energy

1

States that in any chemical reaction or physical process energy can be converted from one form to another but cannot be created or destroyed

Law of conservation of energy

2

Energy that is stored in a substance because of its composition

Chemical potential energy

3

Energy that is in the process of flowing from a warmer to cooler object

Heat

4

Amount of heat to raise 1 g of pure water to 1°C

calorie

5

SI unit of energy

Joule

6

Amount of heat required to raise the temperature of 1 g of that substance by 1°C

Specific heat

7

An insulated device used for measuring the amount of heat absorbed or released during a chemical process

Calorimeter

8

Study of heat changes that accompany chemical reactions in phase changes

Thermochemistry

9

Heat content of a system at constant pressure

Enthalpy

10

A balanced chemical equation that includes the physical states of all reactants and products in the energy change

Thermochemical equation

11

Heat required to melt one more of a solid substance

Molar enthalpy of fusion

12

If R1+R2=R3, then change inH1 +H2=H3

Hess's law

13

Any physical or chemical change that once begun occurs with no outside intervention

Spontaneous process

14

A measure of the number of possible ways that energy of the system can be distributed

Entropy

15

Energy that is available to do work

Free energy

16

Specific part of the universe that contains the reaction or process you wish to study

System

17

Everything in universe other than system

Surroundings

18

System + surroundings

Universe