How can you justify that air is a homogeneous mixture identify substances present in it?

Answer 1

In homogenous mixture you can't see different parts[particles] in air.But in hetro you can see the different parts [particles] in it.Homogenous:mixtures that have uniform coposition throughout are called homogenous mixture.e.g:air,ice cream,gasoline etc.hetrogenous:those mixtures in which composition is not uniform throughout are called hetrogenous mixture.homogenous:Its evenly distributed.it can't be hetro,because then we would not be able to breath.Hetro means it is not mixed in together since we can't breath pure oxygen,nitrogen and pure gases etc.then it must be mixed together evenly,therefore its homo.substances present in air are nitrogen[78.08%]oxygen[20.94%].argon[0.93%].carbon dioxide[0.4%].

Answer 2

Ans. Air is a homogeneous mixture of several gases. It can be established as follows: (i) The amount of gases present in air at different places varies only marginally. (ii) No definite formula can be assigned to air. (iii) The different gases present in air are separable by a physical process: fractional distillation of liquid air. (iv) The properties of air are the properties of its constituents. Air supports combustion because of oxygen present in it. Air turns lime water milky due to the presence of carbon dioxide in it. 1.

Answer 3

Air is homogeneous mixture because it visually uniform through out . it is a mixture of nitrogen ,carbon dioxide , noble gases and moisture