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a relative measure of the mass contribution of each component in a compound. The percentage composition of a part of a compound is the percentage mass that the part contributes to the whole compound.
polyvinyl acetate, a colourless thermoplastic material used in inks and adhesives.
a new species or substance that exists after a chemical reaction has occurred. This excludes un-...
forms ions (either by breaking a crystal lattice up or by a chemical reaction).
a chemical reaction where two molecules combine to form one single molecule. The elimination of...