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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
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13. Which of the following is true about mixtures and compounds?
O A. A compound forms when differ...
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