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those properties that can change without changing the chemical nature of a substance.
the force of attraction between neutral molecules or the atoms of a monatomic gas weak forces...
a clear glassy material possessing good heat and electrical insulating properties.
the theory of acids and bases which defines an acid as a proton donor and a base as a hydroxide...
a molecule that is so big that we can see it, e.g. a diamond, a salt crystal and a piece of...
a group of elements that are poor conductors of heat and electricity.