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.

b.final

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.