# FPC States of Matter - Chapter 3

### 25 terms by mbrazo

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### Absolute Zero

The temperature of 0 Kelvin.

### Boiling

Temperature at which the vapor pressure equals atmospheric pressure.

### Condensation

A phase change where a substance changes from a gas or vapor to a liquid.

### Deposition

When a gas or vapor changes from directly into a solid.

### Endothermic

A change where energy is absorbed.

### Evaporation

A change of state from liquid to gas below the substance's boiling point.

### Exothermic

A change where energy is released.

### Freezing

Change of state from a liquid to a solid.

### Gas

State of matter in which materials have no definite shape and no definite volume.

### Heat of Fusion

The amount of energy required to change 1 gram of a solid to a liquid.

### Heat of Vaporization

Amount of energy required to change 1 gram of a liquid into a gas.

### Kinetic Energy

Energy of motion.

### Liquid

State of matter in which materials have no definite shape, but definite volume.

### Melting

Change of state from a solid to a liquid.

### Phase Change

A reversible physical change from one state of matter to another.

### Pressure

Result of force distributed over an area.

### Solid

State of matter in which materials have definite shape and definite volume.

### Sublimation

A phase change in which a substance changes from a solid directly to a gas.

### Vapor Pressure

Pressure caused by collisions of water vapor with walls of a closed container,

### Vaporization

Phase change in which a substance changes from a liquid into a gas.

### Kinetic Theory of Gases

Particles in a gas are in constant, random motion. The motion of one particle is unaffected by the motion of other particles. Forces of attraction among particles in a gas can be ignored under ordinary conditions.

### Behavior of Liquids

The volume of a liquid is constant because forces of attraction keep the particles close together.

### Behavior of Solids

Particles vibrate around a fixed location.

### Factors that affect gas pressure

Temperature, volume, number of particles.

### Six Common Phase Changes

Melting, freezing, vaporization, condensation, sublimation, and deposition.

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