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Solids, Liquids and Gases Summary
Density
Density () = mass (m) / volume (v)
· Density is how much there is in a given volume

For a regular solid
- Find the volume (volume = width x height x depth) in cm3
- Find the mass with top-pan balance AtpointB,thepressure…

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· Air bubbles expand as they rise as the lower pressure means the air particles become further
apart




The States of Matter
· Molecules in a solid are tightly packed and held in fixed positions by strong forces. The
molecules vibrate around their fixed positions. As the solid gets hotter,…

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