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Solids, Liquids & Gases
Adding or removing heat
Phase Changes
Vocabulary
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100

Has a definite volume but not a definite shape

What is a liquid?

100
When a liquid is cooled it becomes what?
What is a solid?
100
Phase change of a solid turning into a liquid
What is melting?
100
Anything that has mass and takes up space
What is matter?
100
The law that states that matter cannot be created or destroyed.
What is the law of conservation of matter?
200
Has a definite shape and volume
What is a solid?
200

When heat is added to a liquid it becomes what?

What is a gas?

200
Phase change of a solid turning into a gas
What is sublimation?
200
A group of atoms held together by chemical bonds
What are molecules?
200
As a solid turns to a liquid it's what happens to the thermal energy.
What is increases?
300
In what state do molecules move extremely quickly and by bouncing off each other
What is a gas?
300
When a gas is cooled it becomes a what?
What is a liquid?
300
Change from a liquid to a solid
What is freezing?
300

A substances ability to flow.

What is fluidity?

300
What are all molecules always in a constant state of?
What is motion?
400
Another name for the states of matter
What are phases of matter?
400
What must happen for matter to change states?
What is it must gain or lose energy?
400
Phase change of a gas turning into a liquid
What is condensation?
400

A solid with particles arranged in a repeating, orderly 3-D pattern?

What is a crystalline solid?

400
What happens when an object's kinetic energy increases?
What is the particles move faster?
500
This is the name of the graph that shows the relationship between phase states, pressure, and temperature.

What is a phase diagram?

500
This is the name of the specific pressure and temperature conditions required for all three states of a substance to exist at the same time.

What is triple point?

500

When surface liquid molecules gain enough kinetic energy to become a gas.

What is evaporation?

500

A solid with a particle placement more similar to a liquid.

What is an amorphous solid?

500

Shows the time a substance spends in each phase and the amount of heat energy added/removed.

What is a heating/cooling curve?