Air is a homogeneous mixture because it is made up of several different gases. Nitrogen N2 makes up 78 per cent of the gases Oxygen O2 makes up 20 Noble gases make up 1 Carbon dioxide CO2 makes up 003 per cent. Pin On Learn Chemistry The air that we breathe is a. . In chemistry mixture is a matter that consists of. This makes air eligible to be considered a mixture. Is air homogeneous or heterogeneous or compound. Air is a homogeneous mixture of different gases. Air is a mixture and not a compound because of the following reasons. Oxygen o2 Carbon dioxide co2. Air is considered as a mixture because. Air is an homogeneous mixture of several gases. Air is a mixture of different gases and dust particles. The air that we breathe is a homogeneous mixture of oxygen nitrogen argon and carbon dioxide along with other elements in smaller amounts. Air can be separated into its constituents such as o