Chapter 8 Vocabulary Flashcards Preview

8th Grade Science > Chapter 8 Vocabulary > Flashcards

Flashcards in Chapter 8 Vocabulary Deck (21)
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1

States of Matter

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

2

Solid

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

3

Liquid

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

4

Surface Tension

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

5

Viscosity

The resistance of a gas or liquid to flow.

6

Gas

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

7

Temperature

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

8

Volume

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

9

Pressure

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

10

Boyle's Law

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

11

Charles's Law

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

12

Change in state

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

13

Melting

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

14

Evaporation

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

15

Boiling

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

16

Condensation

The change of a gas to a liquid.

17

Sublimation

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

18

Endothermic Change

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

19

Exothermic change

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

20

Crystalline Solid

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

21

Amorphous solid

A solid without a special arrangement of particles.