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a molecule that is so big that we can see it, e.g. a diamond, a salt crystal and a piece of metal.
a solution containing much dissolved base in a little water.
a heterogeneous mixture with a stable distribution of a liquid in another liquid, for example,...
the relationship between volume and pressure for a fixed amount of a gas at constant temperature...
a property that, if changed, can change the chemical nature of a substance and how it reacts....