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dealing with quantities as well as the nature of the substances under consideration.
a molecule that is so big that we can see it, e.g. a diamond, a salt crystal and a piece of...
all matter is made of particles (molecules or atoms) that are in constant motion.
(also called allotropism) the property of some chemical elements to exist in two or more...
a group of organic compounds obtained by oxidation of alcohols.
the force of attraction between neutral molecules or the atoms of a monatomic gas weak forces...