no
air is not pure
no
air around us is not pure because in air so many gases are mixed like nitrogen , oxygen , carbon etc.
With today's kind of pollution. It's not anymore.
reason for air is not pure
No
No, but since carbon dioxide is everywhere in the air around us it is very hard to obtain pure water.
No, due to pollution the composition of air changes due to industrial emission,automobile exhaust .
Most substances around us are mixtures, rather than pure substances. Mixtures are composed of two or more substances that are physically combined and can be separated by physical means, while pure substances are made up of only one type of particle. Examples of mixtures include air, sea water, and soil.
Air contains about 19-20% oxygen
how does the air around us moves?
The more air is in us the higher the preshure. If there was more air in us than around us we could explode howewer if there was too much air around us we would probably get squeezed.