13. Which of the following is true about mixtures and compounds? O A. A compound forms when different substances chemically combine to form a new substance.
OB. A mixture contains different substances that are not chemically combined with one another.
O C. Mixtures and compounds are both made of two or more different substances.
O D. all of these

Explanation:

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D all of these

Explanation:

All of these are true about mixtures and compounds.

Mixtures and compounds are both made of two or more different substances.

The key difference between mixtures and compounds is that a compound is a new substance that

forms when other substances chemically combine. The new substance that is formed has

different properties from the original substances.

A mixture is simply a physical combination of two or more substances. Some of the individual

properties of the original substances are retained by the mixture.

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