Air is a compound gas, but techically speaking it is definitely not a chemical substance. The main components of air are nitrogen (78% ) and oxygen (20.95%) and yes, those ARE chemical substances. Chemistry, as well as other sciences, requires you to be very specific with concepts and language.
No. Air is not pure substance. Air has all dust and dangerous gases with it. From place to place its composition changes.
As per my knowledge pure substance does not have anything else added to it. Air and water are pure substances that exist in nature. A pure substance cannot be taken apart to locate more substances.
No. To start with, air is not a pure substance, and mixiong it with something else just makes it worse.
Air is a mixture.
Air is considered a pure substance because it is a homogeneous mixture of gases, mainly nitrogen, oxygen, carbon dioxide, and trace amounts of other gases. Each component of air retains its unique chemical properties and cannot be separated by physical means without changing the composition of air.
Air is a mixture.
Air is a mixture of gasses, about 78% nitrogen, 21% oxygen and then a dash of others. Nitrogen OTOH is one of the elements out of the periodic table, which I guess is what you mean with a pure substance.
Air is a mixture of gasses, about 78% nitrogen, 21% oxygen and then a dash of others. Nitrogen OTOH is one of the elements out of the Periodic Table, which I guess is what you mean with a pure substance.
pure substance, propanone
it is a pure substance.... not
Pure substance
Methane is a pure substance.