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Solids, Liquids & Gases
Adding or removing heat
Phase Changes
Conversation
of Mass
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

Increasing or decreasing thermal energy can change 

What is the state 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

Phase changes are when a substance changes from one state of matter to another because of the addition or removal of

What is thermal energy (or heat)?

200

The energy of an object because of motion

What is kinetic energy? 

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
Mass cannot be created or destroyed.
What is the Law of Conservation of mass?
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
How many Oxygen atoms are in H2O?
What is 1?
400
What happens when an object's kinetic energy increases?
What is the particles move faster?
500

An unusual state of matter found in neon signs and the sun

What is plasma?

500

the theory that all matter is made up of particles that are always moving

What is the kinetic molecular theory? 

500
When heat is added to a liquid and becomes a gas.
What is evaporation?
500
How many Hydrogen atoms are in CH4
What is 4?
500
The average kinetic energy of the individual particles in a substance.
What is temperature?