Please help, science test dew in a couple minutes

14~ A

15~ C

16~ B

11~ C

12~ B

13~ A

Explanation:

Im not sure if i have question 15 right but im sure about the others.

A compound is made up of two or more elements chemically formed together to make a new substance. As for an element, they are consisting of only atoms that all have the same numbers of protons in their atomic nuclei.  A mixture is made up of two or more different substances that are not chemically combined.