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Paper 1
Topic 3 - Particle Mode of Matter
Density of Materials
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Wendy A
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Density =
Mass
/
volume
Solids
- A
fixed
,
regular
structure
with
strong
forces of attraction. They only
vibrate
.
Highest
Density.
Liquids
- Have
weaker
forces of attraction. They are
close
and
move
past
each other. They have
more
energy and move in
random
directions.
Gases
- Have
no
forces
of
attraction.
Highest
amount of
energy
.
Very
spaced
out
and
particles
are
free
to
move.
Random
directions.
Have
low
density.