Pure air is homogeneous because all components are completely miscible.
Air is a homogeneous mixture.
Heterogeneous
homogeneous
CO2 is a pure substance and so is homogeneous. Hint: if it has a chemical formula then it is a pure substance.
homogeneous
If you mean homogeneous or heterogeneous, then iron is homogeneous: it is a pure element.
Since gold is an element and therefore a pure substance it is homogeneous.
pure air is homogeneous but dusty air is heterogeneous
homogeneous
air is homogeneous
Pure iron is homogeneous.
No. Pure substances are homogeneous, never heterogeneous.
Wine is a homogeneous solution.
The pure nitrogen is a chemical element, gaseous at room temperature.
It depends. You can have a gaseous mixture such as air, which would be a homogeneous mixture. But a single gas such as oxygen or methane would be a pure substance.
CO2 is a pure substance and so is homogeneous. Hint: if it has a chemical formula then it is a pure substance.
water is pure so is homogeneous ice is pure so is homogeneous oil is pure so is homogeneous
No.If it's "pure" it's not a mixture.
Some people divide matter into pure substances and mixtures. Pure substances are elements and compounds. Mixtures include homogeneous and heterogeneous mixtures. Some people divide matter into homogeneous matter and heterogeneous matter. Homogeneous matter includes pure substances and homogeneous mixtures (solutions). Heterogeneous matter is heterogeneous mixtures.