What combines to form bonds in compounds?

A. atoms of elements

B. molecules

C. types of minerals

D. valences

A chemical compound consists of 2 or more chemical elements. They can be separated into simpler substances. Atoms of elements can be combined to form compounds. Molecules are groups of 2 or more atoms held together by chemical bonds. Minerals are chemical compound that can be found in nature. Valence is a measure of the combining power of an element. Answer: A. Atoms of elements.