# Chapter 8 Vocabulary Flashcards

1
Q

States of Matter

A

The physical forms of matter, which include solid, liquid, and gas.

2
Q

Solid

A

The state of matter in which the volume and shape of a substance are fixed.

3
Q

Liquid

A

The state of matter that has a definite volume but not a definite shape.

4
Q

Surface Tension

A

The force that acts on the surface of a liquid and that tends to minimize the area of the surface.

5
Q

Viscosity

A

The resistance of a gas or liquid to flow.

6
Q

Gas

A

A form of matter that does not have a definite volume or shape.

7
Q

Temperature

A

A measure of how hot (or cold) something is; specifically, a measure of the movement of particles.

8
Q

Volume

A

A measure or size of a body or region in three-dimensional space.

9
Q

Pressure

A

The amount of force exerted per unit area of a surface.

10
Q

Boyle’s Law

A

The law that states that the volume of a gas is inversely proportional to the pressure of a gas when temperature is constant.

11
Q

Charles’s Law

A

The law that states that the volume of a gas is directly proportional to the temperature of a gas when pressure is constant.

12
Q

Change in state

A

The change of a substance from one physical state to another.

13
Q

Melting

A

The change of state in which a solid becomes a liquid by adding energy.

14
Q

Evaporation

A

The change of a substance from a liquid to a gas.

15
Q

Boiling

A

The conversion of a liquid to a vapor when the vapor pressure of the liquid equals the atmospheric pressure.

16
Q

Condensation

A

The change of a gas to a liquid.

17
Q

Sublimation

A

The process in which a solid changes directly into a gas.

18
Q

Endothermic Change

A

A change that causes energy to be gained by the substance as it changes state.

19
Q

Exothermic change

A

A change that causes energy to be removed from the substance as it changes state.

20
Q

Crystalline Solid

A

A solid with an orderly, three-dimensional arrangement of particles in a repeating pattern.

21
Q

Amorphous solid

A

A solid without a special arrangement of particles.