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Particle Theory of Matter

Across
Gas going to solid
A very small object
The amount of space that matter takes up
The amount of matter in something
Gas changing to liquid
Particles which are close together but free to move.
Liquid changing to solid.
Down
Anything that takes up space
Solid going to gas
A space with no particles in it
Liquid changing to gas.
High energy particles which are far apart and freely moving.
The amount of mass in a certain volume
Solid changing to liquid
The random movement of particles from an area of high concentration to low concentration.
Particles with low energy, that are close together, and moving slightly