Question

the model below represents ferrous oxide. ferrous oxide makes up about 10% of the mantle, one of the layers beneath earths surface. complete the statement. ferrous oxide is an elementary substance a compound

Explanation:

A compound is a substance formed when two or more elements are chemically bonded together. Ferrous oxide contains iron (Fe) and oxygen (O) atoms, which are different elements. An elementary substance consists of only one type of atom. Since ferrous oxide has two types of atoms (Fe and O), it is a compound.

Answer:

a compound