Give reasons to support the fact that air is a mixture. - Vidyadip

Question

Give reasons to support the fact that air is a mixture.

✓

Answer

Air is a mixture can be supported by the following evidence.

Variable composition at different places
Lacks distinct properties of its own
Has no definite boiling point
Components of air cannot be easily separated by physical means.
Formation of air does not involve any energy change.
Cannot be represented by a chemical formula.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "[2 Mark Question Answer]" from Air and Atmosphere→Air and Atmosphere — all question types→CHEMISTRY STD 7 question papers→ICSE Board STD 7 question papers→ICSE Board question paper generator→

Similar questions

Give an experiment to explain that there are intermolecular spaces between water molecules.

Give two uses ofSilicon

Name the particles which revolves around the nucleus of an atom and state its mass and charge.

Name the following radicals and give their valencies:
1. $SO _4$
2.$CO _3$
3.$OH _4$
4.$Cr _2 O _7$

Choose strong and weak acids as well as strong and weak bases from the following :
$H_2CO_3, HNO_3, CH_3COOH, CU(OH)_2, NH_4OH, KOH, Ca(OH)_2, HCl$

What is rust ? State two important conditions necessary for rusting.

What is an amalgam? How does an amalgam different from an alloy?

Describe what you will observe and write fully balanced equation when the following is introduced in a jar of oxygen.
Burning phosphorus

Name the three types of oxidation processes. In which of these large amount of heat and light energy are produced?

When a burning splinter is introduced in a jar containing carbon dioxide