gennychem

a characteristic that can be observed and measured without changing the identity and composition of the substance.

ability refers to the (inability) of a substance to undergo changes to transform substance into a different substance

This is characteristic that can be observed when the substance undergoes a change in composition

vary with the amount of the Substance and this include mass, weight and volume.

do not depend on the amount of the substance. Examples include color melting point boiling point electrical conductivity and physical state at a given temperature.

any matter that has a fixed chemical composition

one type or kind of atom cannot be separated further into simpler substances.

pure substances that can be separated.

combination of two or more pure substances in variable proportions in which the individual substance retains their identity.

is a solution of nitrogen, oxygen, water vapor, Carbon dioxide