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the mass of a formula unit relative to one atomic mass unit.
the amount of energy required to change the temperature of a substance.
(also called allotropism) the property of some chemical elements to exist in two or more...
a molecule that is so big that we can see it, e.g. a diamond, a salt crystal and a piece of...
bonds that form between the hydrogen atom of one molecule and an oxygen, nitrogen or fluorine...
the orientation of the functional groups of a molecule in space.