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Phases and Phase Changes

Teacher: Brenda
Across
Both a liquid and a gas take the shape of their _.
In a solid, the particles are packed _ together.
Freezing point and melting point are at the _ temperature.
Absolute _ is when all particle motion stops.
Gases are _ dense than liquids of the same substance.
When a solid changes directly to a gas.
The opposite of evaporation.
Occurs when a solid becomes a liquid.
During a phase change temperature does not _ or decrease.
The state of matter where the particles are spread farthest apart.
A state of matter with a definite shape and volume.
The particles in a liquid move _ when energy is added.
Down
The change from liquid to gas at temperatures below the boiling point.
Solids, liquids and gases are categorized based upon whether their _ and volumes are variable.
This happens at the same temperature as melting.
The phase change from gas to solid.
The state of matter that results from condensation.
The phase change from liquid to gas at a definite temperature.
A gas does not have a _ shape or volume.
The particles in a solid move _ than those in in a liquid.
For a solid to become a liquid heat must be _.
If you add heat to a liquid its temperature will _ until it begins to boil.
For a gas to become a liquid heat must be _.
In a gas the particles are spread _ apart.