A pure chemical substance
Explanation:
A pure substance is any substance made up of only one kind of matter and has definite properties.
Matter is anything that has weight and occupies space
On a broad basis, matter can be categorized as pure or distinct substances and impure substances or mixtures.
Pure substances have the following properties;
- All parts of a pure substance remains the same throughout i.e homogeneous.
- Their composition is definite
- They cannot easily be broken or separated down into simpler substances by physical means.
They have a unique set of chemical properties.
Pure substances are elements and compounds.
learn more:
Heterogeneous mixtures brainly.com/question/1446244
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