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Solids, Liquids and Gases Summary
Density () = mass (m) / volume (v)
Density is how much there is in a given volume.
Density is measured in kg/m3, although it is sometimes more convenient to measure
it in g/cm3, in which case, divide it by 1000 to get Kg.…

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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, these
vibrations get bigger.
Molecules in a liquid are closely packed but do not have a regular structure. The
forces between the molecules…

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