Biology, 21.11.2020 04:40, mckadams02

Which is true about a pure substance? A. An element is a pure substance because its melting point decreases when its mass decreases.

B. A compound is a pure substance because it has a single chemical composition.

C. A mixture is a pure substance because its parts can be visibly identified.

D. A solid is a pure substance because it has a higher density than a liquid.

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Which is true about a pure substance? A. An element is a pure substance because its melting point d...