A mixture has a variable composition. Give three other reasons wh… - Vidyadip

Question

A mixture has a variable composition. Give three other reasons why air is considered a mixture and not a compound.

✓

Answer

Air is a mixture because :

Air has no formula, a mixture has no formula whereas the compound has a formula.
No energy changes are involved to form air from various gases.
When air is formed out of its constituents no change in mass nor change in volume takes place.
Properties of air vary from place to place and from time to time. i.e. there is more $CO _2$ in towns as compared to villages where more oxygen prevales as compared to towns.
Components of air can be separated by simple physical methods.

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 "[3 Mark Question Answer]" from Air and Atmosphere→Air and Atmosphere — all question types→CHEMISTRY STD 6 question papers→ICSE Board STD 6 question papers→ICSE Board question paper generator→

Similar questions

Tabulate a comparative chart – to differentiate between elements, compounds, and mixtures. Differentiate them with reference to properties

Draw a neat labelled diagram of the addition of copper sulphate to water. Label solute, solvent, and solution in the same.

Differentiate between the following changes with suitable examples.
Slow and fast changes

Give an example of mixtures of elements and compounds.

Example the solvent extraction method.

State two ways by which a small amount of clear water can be made safe for drinking.

Tabulate a comparative chart – to differentiate between elements, compounds, and mixtures. Differentiate them with reference to existence

Describe a simple experiment with the help of a diagram to show that Air is highly compressible

Describe simple experiments to prove that gases have mass.

Explain the term ‘cosmetics’ ‘talc’. Name a few main ingredients in cosmetics the role they play.