Mixture, because it is mixed with all sorts of chemicals, such as smog, and or pollen.
Mixture is NOT a pure substance, because to be a pure substance, it can't be mixed with anything.
Chat with our AI personalities
Oxygen is a pure element. The gas form (O2) is also pure because it only contains one element even though it is two atoms.
pure substance
Oxygen is an element (pure), O2, NOT a mixture, even not a compound.
Oxygen is a pure substance. In nature, free oxygen exists as a molecule of two oxygen atoms covalently bonded, O2.
Household hydrogen peroxide is a homogeneous mixture of hydrogen peroxide and water.
pure substance, propanone
Mixture. An alloy is a mixture of metals.
Air is a mixture.
Homogeneous mixture
mechanical mixture