Answer:
A substance that has a fixed chemical composition throughout is called a pure substance such as water, air, and nitrogen. Apure substance does not have to be of a single element or compound.
Pure substances are substances that are made up of only one kind of particles and has a fixed or constant structure.
Pure substances are further classified as elements and compounds
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Answer:
A substance that has a fixed chemical composition throughout is called a pure substance such as water, air, and nitrogen. Apure substance does not have to be of a single element or compound.
Pure substances are substances that are made up of only one kind of particles and has a fixed or constant structure.
Pure substances are further classified as elements and compounds