Section 5.1 Of Textbook

Question 1

What is thermochemistry?

Answer 1

The study of energy changes involved in chem and phy changes

Question 2

What are 2 foundational concepts of thermochemistry?

Answer 2

1. All energy forms placed in 2 concepts

2. The energy unit

Question 3

What are the 2 concepts energy forms are placed in?

Answer 3

1. Kinetic energy

2. Potential energy

Question 4

What is kinetic energy?

Answer 4

Energy of motion (anything moving)

Question 5

What is potential energy?

Answer 5

Stored energy of an object due to factors such as inner stress and electrical charge

Question 6

What is a system?

Answer 6

Any sample under observation

Question 7

What are surroundings?

Answer 7

Anything not part of system

Question 8

What surroundings are relevant to system?

Answer 8

Those that react with it

Question 9

What is an open system?

Answer 9

Exchanges energy and matter with surroundings

Question 10

What is a closed system?

Answer 10

Only exchanges energy with surroundings

Question 11

What is an isolated system?

Answer 11

No exchange of energy and matter with surroundings

Question 12

What is thermal energy?

Answer 12

Sum of kinetic energies of particles of a sample

Question 13

What is temperature?

Answer 13

Measure of average kinetic energy of particles of a matter sample

Question 14

What is specific heat capacity?

Answer 14

amount of energy needed to increase temp if 1g of a substance by 1•c