Question

Give reasons for the following statements. a) Air is a mixture, not a compound. b) Tap water is a mixture, not a compound.​

Answer 1

Answer:

a) air is a mixture because it contains many gases such as oxygen , nitrogen and carbon dioxide.

Answer 2

Answer:

statement a) Air is a mixture and not a compound because:

Air does not have a formula like a mixture, while compounds have a fixed formula.

When air is formed by gases, there is no energy change.

Properties of air are variable and subjective to time and place.

Components of air can be physically separated.

statement b) Tap water is a mixture, not a compound because:

It contains the water and dissolved chemicals such as calcium carbonate and magnesium, and even fluoride. A mixture is not chemically bonded together, just different elements or compounds physically mixed and distributed throughout.