Question

the model below represents calcium oxide. calcium oxide is used to make cement and steel. complete the statement. calcium oxide is an elementary substance a compound

Explanation:

A compound is a substance formed when two or more elements chemically combine. Calcium oxide (\(CaO\)) is made of calcium (\(Ca\)) and oxygen (\(O\)) elements. An elementary substance consists of only one type of element. Since calcium oxide has two different elements (\(Ca\) and \(O\)), it is not an elementary substance.

Answer:

a compound