Question

Which of the following is an example of a mixture? A. Hydrogen B. Carbon Dioxide C. The air in our classroom D. Water

Answer 1

$\huge\bold\blue{Answer:-}$

Option B. Carbon Dioxide is an example of a mixture. Carbon dioxide is a Homogeneous Mixture.

$\huge\bold\green{~ Mixtures}$

Mixtures are made up of mixing two or more pure substances ( compounds ) such that each substance retaines its own chemical identity.

● There are two types of mixtures.

• Homogenous

• Heterogeneous

$\huge\bold\green{~ Homogenous}$

A mixture which has a uniform composition throughout is called homogeneous mixture or solution.

Examples :- Sugar in water, Salt in water.

$\huge\bold\green{~ Heterogeneous}$

A mixture contains physically distinct parts and has a non - uniform composition is called a heterogeneous mixture.

Examples :- Mixture of salt and iron filings, Sand and sugar.

Answer 2

The air in our classroom is an example of a mixture. (OPTION C)

MIXTURE -

• A Mixture is the composition of two or more substances physically.
• The formation of a mixture does not involve a chemical reaction.
• Air is the mixture of pure substances such as oxygen, nitrogen, argon, water vapors.
• The composition and chemical properties of air are based on the properties of the constituent gases.
• The components of the air mixture can be separated from each other as they are not chemically bonded.