Explain why air is considered as a mixture and not a compound state two difference between a compound and mixture
Answers
Answer:
Air is mixture, but not a compound because of the following reasons: Air can be separated into its constituents such as oxygen, nitrogen, etc. by fractional distillation of liquid air. Air shows the properties of all gases present in it.
Why is air a mixture?
air is a mixture because of the following reasons:
-it consist of many gases
-gases are not fixed. They can be present in any proportion
-No formula can represent air
Why is air not a compound?
Air is not a compound because if the following reasons:
- compounds consist of two or more elements in a fixed ratio but air is a mixture and so does not have a fixed ratio of its gases
-compound must be a pure substance but air is a impure substance.
Difference between compound and a mixture?
-A compound is always pure while mixture is an impure substance
-A compound is always homogeneous while mixture can be both homogeneous and heterogeneous
-A compound has a fixed proportion which means it is formed when two or more pure substance chemically combine in a definite ratio by mass while mixtures have no fixed composition which means they are formed by mixing two or more substance is any ratio without any chemical reaction.
-Properties of components are changed during the formation of compounds while mixture retain their individual properties.
-Components of a compound can be separated by chemical processes while components of a mixture can be separated by simple physicals methods.
-A molecule of a compound is represented by a definite chemical formula while mixtures cannot be represented by any formula