Chapter 9 - Thermochemistry

Question 1

Energy

Answer 1

The capacity to do work or produce heat.

Question 2

Law of Conservation of Energy

Answer 2

Energy can be converted, but not created or destroyed.

Question 3

Potential Energy

Answer 3

Energy due to position or composition.

Question 4

Kinetic Energy + What It Depends On

Answer 4

Energy due to motion of object.(Depends on Mass + Velocity)

Question 5

Kinetic Energy Equation

Answer 5

KE=1/2 mv^2

Question 6

Heat

Answer 6

The transfer of energy between 2 objects due to a temperature difference.

Question 7

Work

Answer 7

A force acting over a distance.

Question 8

Temperature

Answer 8

Reflects random motion of particles.(Related to KE)

Question 9

KE(Avg)=

Answer 9

3/2 RT

Question 10

Path Dependant Properties

Answer 10

Work + Heat

Question 11

State Functions

Answer 11

A property of a system that depends only on its present state. (Not how it got there)

Question 12

Examples of state functions?

Answer 12

Energy, Enthalpy

Question 13

Examples of non state functions?

Answer 13

Heat, Work

Question 14

System

Answer 14

Part of the universe that we focus on.(Reactants, Products)

Question 15

Surroundings

Answer 15

Everything else in the universe.(Beaker, Room)

Question 16

Open System

Answer 16

Can freely exchange energy and matter with surroundings.

Question 17

Closed System

Answer 17

Can exchange Energy but not matter with surroundings.

Question 18

Isolated System

Answer 18

Does not interact with surroundings.