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A student compiled data in a table to compare pure substances and mixtures.

Pure substances ----------------------- Mixtures - contains two or more substances, are chemically combined
Elements and compounds
cannot be separated
using physical means


Which statement BEST describes the mistake the student made on their table?

(1 point)
Responses

Elements and compounds are considered mixtures.
Elements and compounds are considered mixtures.

Mixtures contain at least three or more substances.
Mixtures contain at least three or more substances.

Mixtures are substances that are not chemically combined.
Mixtures are substances that are not chemically combined.

Pure substances can be separated using physical means.
Pure substances can be separated using physical means.
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1 answer

The statement that BEST describes the mistake the student made on their table is:

Mixtures are substances that are not chemically combined.

This is correct because mixtures can contain two or more substances that are not chemically combined, and the student’s table did not clearly distinguish this from pure substances, which cannot be separated by physical means.

The other options either mischaracterize mixtures or are not directly related to the error in the student’s classifications of pure substances and mixtures.