Particle Theory of Matter (5.1)

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matter

anything that has mass and volume

atoms

the tiny particles that make up matter

molecule

2 or more atoms joined together

Particle Theory of Matter

theory that describes the composition and behaviour of matter

5 parts of Particle Theory of Matter

All matter is made up of particles that are constantly moving
Particles attract each other
All 3 states of matter contain the same type of particles
Particles are very tiny
All particles are separated by space

how are solids formed

formed when force of attraction holds particles close together

how are liquids formed

formed when particles gain energy and move due to heating and force of attraction no longer holds them as close together

how is gas formed

continual heating turns into gaseous state

pure substance

type of matter only made up of 1 particle

mixture

contains more than 1 particle, can be all 3 states of matter

mechanical mixtures

a mixture where the substances/particles are easily distinguishable (usually murky or opaque)

solutions

looks like a pure substance but contains more than 1 particle which cannot be distinguished apart (usually clear if liquid or gas)

alloys

the resulting metal when 2 or more metals are mixed together