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Solids, Liquids & Gases
Adding or removing heat
Phase Changes
Vocabulary
Random
100
Has a definite volume but not a definate 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 liquid's resistance to flow
What is vicosity?
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 3-D pattern?
What is a crystalline solid?
400

What happens to the molecules when kinetic energy increases?

They move faster

500
An unusual state of matter found in neon signs
What is plasma?
500

Explain the particle arrangements for a solid, liquid, and gas.

Solid molecules are packed tightly together

Liquid molecules are close together but can rotate around

Gas molecules are spread far apart

500
When heat is added to a liquid and becomes a gas.
What is evaporation?
500
A solid with particles placed randomly.
What is an amorphous solid?
500

What is the average kinetic energy of a liquid?

Medium