Question

Which of the following is not a mixture?
1)air
2)sea water
3)pure water ​

Answer 1

Answer:

pure water is not a mixture

Answer 2

Answer:

A mixture is when two or more substances combine physically together. However, in water, two hydrogen atoms combine with one oxygen atom chemically, forming a new substance that has properties different from hydrogen alone or oxygen alone. ... Therefore, water is not a mixture; it is a compound and it is pure.