Question

classify the following as a heterogeneous mixture (suspension), homogeneous mixture (solution), or a colloid: air
colloid
heterogeneous mixture (suspension)
homogeneous mixture (solution)

Explanation:

Air is a uniform mixture of gases (like nitrogen, oxygen, argon) where the components are evenly distributed at the molecular level, with no visible distinct phases or large suspended particles. This fits the definition of a homogeneous mixture (solution).

Answer:

homogeneous mixture (solution)