Differentiate Between Homogeneous and Heterogeneous Mixtures with Examples. - Science

Distinguish Between

Differentiate between homogeneous and heterogeneous mixtures with examples.



A homogeneous mixture is a mixture having a uniform composition throughout the mixture. For example, mixtures of salt in water, sugar in water, copper sulphate in water, iodine in alcohol, alloy, and air have uniform compositions throughout the mixtures.

On the other hand, a heterogeneous mixture is a mixture having a non-uniform composition throughout the mixture. For example, composition of mixtures of sodium chloride and iron fillings, salt and sulphur, oil and water, chalk powder in water, wheat flour in water, milk and water are not uniform throughout the mixtures.

Concept: Mixture
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Chapter 2: Is Matter around us Pure - Intext Questions [Page 18]


NCERT Science Class 9
Chapter 2 Is Matter around us Pure
Intext Questions | Q 1 | Page 18

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Classify each of the following as a homogeneous or heterogeneous mixture.

Soda water, wood, air, soil, vinegar, filtered tea

What are the characteristic properties of a pure substance? Why do we need them?

Define :- Miscible liquids

Define :- Immiscible liquids

Fill in the blank

Mixtures can be ________ or _______ 

Give two reasons for supposing that water is a compound and not a mixture.

What is a mixture ? Give two example of mixtures.

When a mixture of iron powder and sulphur powder is heated strongly to form iron sulphide, then heat energy is :

Which method can be used to separate a mixture of naphthalene and common salt ?

Name one pair of substances whose mixture can be separated by fractional distillation.

How will you separate a mixture of chalk powder and water?

Matter is classified into the types of mixture, compound and element by applying the criterion ______.

Milk is an example of a type of matter called __________.

Seawater tastes salty due to the dissolved salt. the salinity (the proportion of salts in water) of some water bodies Lonar lake - 7.9 %, Pacific Ocean 3.5%, Mediterranean sea- 3.8%, Dead sea- 33.7%. Explain two characteristics of the mixture from the above information.

Give two examples.

Homogeneous mixture

The constituents of a mixture are present in a fixed ration.

Solutions are

Define the following:

Pure substance

Give reason:

Why do petrol and water form a heterogeneous mixture?

Give two examples of the following type of mixture.


Name the components present in the following mixture:

Tap water

Define Miscible liquids

Name two substances insoluble in water.

Write “true” or “false” for the following statement

Salt and air dissolved in water add taste to water.

State the principle involved in separation of solid-solid mixtures by Sublimation

Name the following

A black non-metallic component of the mixture gunpowder.

Name the following:

A physical method of separating iron from an iron-sulfur mixture.

Write answer to the following question in your own words.

How are the components of mixtures separated by simple methods?

State what information is provided by the formula of calcium hydroxide – Ca(OH)2

Four atoms of hydrogen combine with one atom of carbon to give methane [CH4]. State the valency of carbon.

Differentiate between a homogenous and a heterogeneous mixture with one example of each in the (a) solid-solid (b) solid-liquid If (c) liquid-liquid state of the mixture.

Select the correct answer from the choice in the bracket.

A homogenous mixture.

Complete the given analogy.

Iron – sulphur mixture : ______:: Mustard seeds from Urad-dhal: Rolling

Give an example for mixture and justify your answer with reason.

Write the sequence of steps you would use for making tea. (Use the words: mixture, dissolve, filtrate and residue).

Make a fruit or vegetable salad. Give reasons why you think it is a mixture.

Among the following______ is a mixture.

A few drops of ‘Dettol’ when added to water the mixture turns turbid. Why?

How will you separate a mixture containing saw dust, naphthalene and iron filings?

Why do we need to separate different components of a mixture? Give two examples.

Air is a mixture. Justify.

Give the characters a mixture.

Milk is a ______.

What would you observe when

an aqueous sugar solution is heated to dryness.

A colloid is a ______ mixture and its components can be separated by the technique known as ______.

Sucrose (sugar) crystals obtained from sugarcane and beetroot are mixed together. Will it be a pure substance or a mixture? Give reasons for the same.

Supernatant denotes the heterogeneous mixture, lying above a solid residue, after crystallization, precipitation, centrifugation, or another process.

What does the LPG (Liquefied petroleum gas) contain?

Mixtures are impure substances.

When elements are physically mixed they form ______.

LPG is ______ gas. 

A mixture does not have a fixed ______.

List out the characteristics of Mixtures.

Write scientific reason.

Lemon sherbet has a sweet, sour and salty taste, and it can be poured into a glass.

Write scientific reason.

Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.

Write scientific reason.

Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.


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