7. an example of a compound is a) chicken noodle soup b) powerade c) air inside a balloon d) lead pipe e) baking soda (nahco3)

E

Explanation:

A. Is wrong

To prepare chicken noodle soup, several things are needed to be mixed. This is what makes it a mixture

B is wrong

Powerade is not a compound.

C is wrong

The air inside a balloon is usually helium which is an element and not a compound

D. Lead pipe is not a compound

E. Baking soda is a compound as it contains elements in different ratios

baking soda

Explanation:

A compound is formed by chemical reaction of atoms of elements. A compound is actually formed by chemical combination of elements. A soul, a Powerade, air and a lead like are not compounds. In the first three items mentioned, on!y a mixture of substances are involved. There isn't any chemical combination at all. Lead pipe only consists of one kind of element. No other thing combines with it at all.

i'm pretty sure it is letter c.) car

it forms an anion that has a larger radius. anions have a negative charge and are larger than the original atom.