State Two Characteristics of Matter Demonstrated by Diffusion. - Science

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State two characteristics of matter demonstrated by diffusion.



The characteristics of matter demonstrated by diffusion are :

  1. Matter is made up of tiny particles.
  2. The particles of matter have large space in between them.
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Chapter 1: Matter in Our Surroundings - Very Short Answers [Page 19]


Lakhmir Singh Class 9 Chemistry - Science Part 2
Chapter 1 Matter in Our Surroundings
Very Short Answers | Q 25.1 | Page 19


Which of the following are matter?

Chair, air, love, smell, hate, almonds, thought, cold, cold drink, smell of perfume.

Give reasons for the following observation:

The smell of hot sizzling food reaches you several metres away, but to get the smell from cold food you have to go close.

What do you observe when a gas jar which appears empty is inverted over a gas jar containing Bromine vapours? Name the phenomenon.

Write your observation and conclusion for the following.

When a small stone is gently dipped into a glass filled with water.

Give reason:
A red ink drop added to small amount of water in a glass turns water red in some time.

Fill in the blank:

Any matter which has a definite.................... but no definite shape is called a...............

Fill in the blank:

Liquids have a definite ............

Fill in the blank:

The temperature at which a liquid boils is called the................. point of that liquid.

Write whether the following statement is true or false.
Only water can exist in three different states.

Give two examples of the following:

Substances which are rigid and not compressible.

The state of matter which has no definite shape or volume is called

  1. solid
  2. liquid
  3. gas
  4. water

Why liquids do not have a definite shape ?

Give reason Gases can be compressed easily .

Write your observation and conclusion for the following

When one of the balloons suspended to the metre scale is punctured while other remains inflated ?

Name the three states of matter and define them.

Give reason of The odour of scent spreads in a room.

Fill in the blank.

Water is a matter because it has mass and occupies _______

There are large intermolecular gaps in

When an incense stick (agarbatti) is lighted in one corner of a room, its fragrance spreads in the whole room quickly. Which characteristic of the particles of matter is illustrated by this observation?

A piece of chalk can be broken into small particles by hammering but a piece of iron cannot be taken into small particles by hammering. Which characteristic of the particles of matter is illustrated by these observations?

Fill in the following blank with suitable words :

The smell of perfume gradually spreads across a room due to .....................

Explain why, we can easily move our hand in air but to do the same through a plank of wood, we need a karate expert.

Explain the following :

When an incense stick is lighted in the corner of a room, its fragrance spreads quickly in the entire room.

What is meant by 'diffusion'? Give one example of diffusion in gases.

Which one of the following statement is correct in respect of fluids?

When a beam of sunlight enters a room through a window, we can see tiny particles X suspended in a gas (or rather a mixture of gases) Y which are moving rapidly in a very haphazard manner.

  1. What could particles X be ?
  2. Name the gas (or mixture of gases) Y.
  3. What is the phenomenon exhibited by particles X known as ?
  4. What is causing the movement of particles X ?
  5. What conclusion does the existence of this phenomenon give us about the nature of matter ?

Define: diffusion

 Define: interconversion of states of matter.

What are the two conditions for the interconversion of states of matter?

Give reasons for the following:

Solids have a definite shape and are highly rigid while gases have to definite shape and are least rigid.

Give reasons for the following:

Sugar can be distinguished from talcum powder using water.

Give reasons for the following:

Water on freezing turns into ice.

Give reasons for the following:

A bottle of perfume on opening evolves an odour which can be sensed over a long distance.

Complete the statement given below by selecting the correct word.

The space between atoms in gases is maximum while in ____ is minimum,

Fill in the blank with the correct word Given below.

The space between atoms’ [molecules] of solids is ____

Define the Solid and give two examples.

Define the Liquid and give two examples.

Fill in the blanks:

Matter is defined as anything that occupies _______ and has _______

With reference to the liquid state of matter – answer the following

How does the stored energy, have an effect on inter-particles space.

200 ml of water is poured into a bowl of 400 ml capacity. The volume of water will be ______.

Among the following ______ is not a mixture.

Water obtained from tube wells is usually ______ water.

Air is not compressible.

Match the following.

Property Example
Breaks easily (Brittle) Metal pan
Bends readily Rubber band
Can be stretched easily Cotton wool
Gets compressed easily Mud pot
Gets heated readily Plastic wire

Mr. Raghu returns home on a hot summer day and wants to have buttermilk. Mrs. Raghu has the only curd. What can she do to get buttermilk? Explain

In a glass containing some water, tamarind juice and sugar are added and stirred well. Is this a mixture? Can you tell why? Will this solution be sweet or sour or both sweet and sour?

Which one of the following element name is not derived from planet?

The Cow and Birds are nonliving things.

Mention any two characteristics of the particles of matter.


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