Oxygen is not a mixture at all. It is simply a gas in it's purest form. Mixtures are made of liquids and solids.
Oxygen is a chemical compound, not a mixture.
Oxygen is a chemical element not a mixture.
An element
Neither, Oxygen is a pure substance not a mixture.
Neither. The condensation of oxygen gas is a phase change. The oxygen itself would be an element, not a mixture.
No, ozone is a pure substance composed of three oxygen atoms bonded together (O3), so it is not a heterogeneous mixture.
Yes it is one of those things. It is an element.
hetergeneous
A flower is a heterogeneous mixture.
Neither. Oxygen is an element, which is a pure substance and not a mixture.
No, baking soda is a compound composed of sodium, hydrogen, carbon, and oxygen atoms in a fixed ratio. It is a homogeneous substance, not a heterogeneous mixture.
Heterogeneous mixture.