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monomers are chemically bonded together to form chains that link thousands of monomers in a polymerisation reaction.
molecule where the ratio of atoms is 1 : 5, for example PCl5
when a reaction produces a gaseous product that is allowed to escape.
a collection of more than one pure substance in no fixed proportion.
the phase in matter in which the particles are far apart and can move freely.
the mass of any substance relative to the amount of the substance; the mass of one mole of any...