Chapter 7

Question 0

Surrounding

Answer 0

The rest of the universe

Question 1

System

Answer 1

Contains the process under study

Question 2

First law of thermodynamics

Answer 2

Energy of the universe is constant (law of conservation)

Question 3

Each chemical bond has what?

Answer 3

Stored chemical energy

Question 4

Exothermic reaction

Answer 4

Energy required to break the bond is less than than the energy released when the bonds are formed, net release of energy

Question 5

Endothermic reaction

Answer 5

Energy required to break bonds is larger than the energy released when the bonds are formed

Question 6

Entropy is negative you must do what?

Answer 6

Apply some form of energy

Question 7

2nd law of thermodynamics

Answer 7

Spontaneous

Doubly tends toward increasing disorder and randomness

Question 8

Entropy

Answer 8

Measure of randomness of a chemical system (no such thing as negative entropy)

Question 9

Positive entropy means?

Answer 9

Increase in disorder for the reaction

Question 10

Exothermic and positive entropy =

Answer 10

Spontaneous

Question 11

Endothermic and negative entropy =

Answer 11

Non spontaneous

Question 12

Free energy

Answer 12

Represents the combined contribution of the enthalpy n entropy values for a chemical reaction

Question 13

Free energy predicts what?

Answer 13

Spontaneity of a chemical reaction

Question 14

Calorimetry

Answer 14

Measurement of heat energy changes in a chemical reaction

Question 15

Calorimeter

Answer 15

Measures heat changes in calories

Question 16

Specific heat (sh)

Answer 16

of calories if heat needed to raise the temperature of 1g of the substance 1degree C