Definitions
Pressure
Particles
Changes of States of matter
Diffusion
100
What is a solid?
state with definite shape and volume
100
When a gas pushes at the walls of a closed space
Pressure
100
True or false. Particles don't move.
False
100
When liquid becomes a gas it is called
boiling or evaporation
100
Only these two states can diffuse
gases and liquids
200
What is a liquid?
The state of matter which flows, keeps its volume, and hard to compress.
200
More particles cause the pressure to .....
increase
200
The theory that explains the properties of solids, liquids, and gases
Particle Theory
200
What is a change in state?
When a substance changes from one state to another
200
The speed of diffusion is affected by these two things
Size or mass of the particle The number of particles
300
What is a gas?
No defined shape or volume and is compressible
300
A space with no air in it
vacuum
300
This keeps particles attracted to each other.
weak bonds
300
What needs to be added or taken away to change a state of matter?
Heat energy
300
What scentific tool can we use to see the particles on a state of matter.
A scanning probe
400
What is volume?
The amount of space something takes up
400
What pushes two Madgeburg hemispheres together?
The air pressure on the outside pushing in
400
This state has particles that move the fastest and has no bonds between particles
a gas
400
When a solid becomes a liquid
Melting
400
This is the random motion of particles that results in diffusion
Brownian Motion
500
What is density?
How close together particles are or the amount of mass in a certain volume
500
What would happen to a metal canister if you sucked all the air out of it?
The canister would be crushed by the air pressure from the outside.
500
How many particles are there in a solid?
Each solid would have a differnt amount of particals so you can't say how many particals are in a solid
500
When a substance is changing state its temperature changes or stays the same
Stays the same
500
If you place a spoonful of sugar in the bottom of a glass of water what will happen to the sugar?
It will dissolve and diffuse throughout the water
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