The Particle Theory
States of Matter
Changes of State
Density and Gas Pressure
Important Terms
100
All matter is made up of this
What is particles
100
My particles have a very weak force of attraction and have very large spaces between them
What is a gas
100
When you add heat to a solid and it becomes a liquid
What is melting
100

In general, solids, liquids, or gases are the least dense?

What is gases

100

We are very small portions or parts of matter

What is particles

200
This affects the speed at which particles move
What is temperature (hot or cold)
200
I take the shape of my container and have a definite volume, but there are spaces between my particles
What is a liquid
200
When you add heat to a liquid and it becomes a gas
What is evaporation
200

Water has a density of 1000 kg/m3.  Will Copper, with a density of 9000 kg/m3, float in water?

What is no, it will not! 

200

The movement of particles from an area of high concentration to low concentration

What is diffusion

300
All particles of one substance are this
What is identical, or the same
300
I have a definite shape and volume and my particles are very close together
What is a solid
300
When you add cold to a liquid and it becomes a solid
What is freezing or solidification
300

Expansion of a solid causes the density of the solid to...

What is a decrease

300

An object which floats easily

What is buoyant

400
The particles of matter are always doing this
What is moving or in constant motion
400
Look at the picture and identify my state of matter
What is a liquid
400
When you add cooling to a gas and it becomes a liquid
What is condensation
400

The particles in ice are more or less densely packed than the particles in water?

What is less densely packed.  While most solids are usually denser than their liquid form, water and ice are an interesting exception!

400

The pressure caused by air particles all around us

What is air pressure

500
Particles have this type of force between them
What is force of attraction
500
Look at my picture and identify which state of matter I am.
What is a solid
500
When you add heat to a solid and it becomes a gas
What is sublimation
500

A balloon is inflated and then placed in the freezer.  What will happen to the size of the balloon?

What is decrease.  This is because as the particles get colder, the particles will move slower. So there will be fewer collisions with the side of the balloon, exerting less pressure and causing the balloon to deflate (decrease in size).

500

A change from one physical state of matter to another

What is change of state

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