Question

multiple - choice question
what is chlorine gas classified as?
compound
heterogeneous mixture
homogeneous mixture
element

Explanation:

• A compound consists of two or more different elements chemically combined. Chlorine gas (\(Cl_2\)) has only chlorine atoms, so it's not a compound.
• A heterogeneous mixture has visibly different components. Chlorine gas is uniform, so it's not a heterogeneous mixture.
• A homogeneous mixture has a uniform composition but contains multiple substances. Chlorine gas is a pure substance (only \(Cl_2\) molecules), so it's not a homogeneous mixture.
• An element is a pure substance made of only one type of atom. Chlorine gas (\(Cl_2\)) is made of chlorine atoms (in diatomic form), so it is an element.

Answer:

Element