its a mixture made of primarily nitrogen as well as O2 and CO2 along with some other trace elements.
Pure air is an elemental mixture of different types of gases and so it is a homogeneous mixture from gases.
It is a mixture of all the gasses in the atmosphere and water.
Neither. Oxygen is an element, which is a pure substance and not a mixture.
Uranium is a natural chemical element, a pure element.
If you are talking about the gas we breath in the air, it's a compound. Pure oxygen as a gas exists as a molecule. Oxygen as an element, is unstable and as far as I know doesn't exist as a single element in nature. It will always occur in combination with something else, such as H2O or O2.
pure substance
No. It will be a homogeneous mixture of gases.
Copper metal is an element and thus a pure substance.
Pure air is the elemental mixture of different types of gases.It is homogeneous mixture of gases Pure air is the elemental mixture of different types of gases.It is homogeneous mixture of gases
Gold is an element, not a compound or mixture. It is a pure substance made up of only gold atoms.
Oxygen is an element and a pure substance.
No, it is not a mixture at all, it is a pure substance as the word "pure" might imply.