Recitation Wks 26-28

Question 1

List the four phases of matter.

Answer 1

Solid, liquid, gas, and plasma

Question 2

What is plasma?

Answer 2

A plasma is an ionized gas.

Question 3

List the three most important temperature scales.

Answer 3

Fahrenheit, Celsius, and kelvin

Question 4

What is the formula for calculating density?

Answer 4

Density equals mass divided by volume

Question 5

What terms describe the phase transition between solid and liquid?

Answer 5

Melting and freezing

Question 6

What terms describe the phase transition between liquid and gas?

Answer 6

Boiling and condensing

Question 7

What is sublimation?

Answer 7

Sublimation is a physical change that occurs when a solid transitions directly to a gas

Question 8

What is evaporation?

Answer 8

Evaporation is a physical change that occurs when a liquid transitions to a gas below it’s boiling point

Question 9

What is a physical property?

Answer 9

A physical property is a property of a substance that is observed or measured with no change to the chemical identity of the substance

Question 10

What is a chemical property?

Answer 10

A chemical property is a Property of a substance that is observed or measured as a chemical identity of the substance is changed