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Lesson 1, Topic 2
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The particle model
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The idea that everything is made up of tiny particles which are constantly moving around is known as kinetic particle theory
The properties of solids, liquids and gases
Solids
Vibrate around a fixed point
Close together
Regular pattern
Liquids
Slide over each other randomly
Close together
Arranged randomly
Gases
Move randomly and rapidly
Far apart
Arranged randomly
Summary
