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# Selina solutions for Concise Physics Class 6 ICSE chapter 1 - Matter [Latest edition]

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## Chapter 1: Matter

Objective questionsShort/Long answer questionsAdditional questionsObjective type questionsObjective types questionsAdditional type questions

#### Selina solutions for Concise Physics Class 6 ICSE Chapter 1 Matter Exercise Objective questions

Objective questions | Q 1.1

Write true or false for the statement

The molecules of each substance are identical.

• True

• False

Objective questions | Q 1.2

Write true or false for the following statement

The inter-molecular forces are effective at all distances between the two molecules.

• True

• False

Objective questions | Q 1.3

Write true or false  For the following Statement

The molecules in a substance arc in random motion.

• True

• False

Objective questions | Q 1.4

Write true or false for the following statement

In a gas, the molecules can move anywhere in space.

• True

• False

Objective questions | Q 1.5

Write true or false for the following statement

The liquids are less viscous than the gases.

• True

• False

Objective questions | Q 2.1

Fill in the blank

All the molecules of a substance are .............

Objective questions | Q 2.2

Fill in the blank

The inter-molecular spacing is .......... in solids ........... in liquids and ............... in gases.

Objective questions | Q 2.3

Fill in the blank

The molecular motion in liquid and gas is in ................. path.

Objective questions | Q 2.4

Fill in the blank

In a solid, the molecules ............................................ but they remain at their fixed positions.

Objective questions | Q 2.5

Fill in the blank

The inter-molecular forces are the weakest in ...............

Objective questions | Q 2.6

Fill in the blank

A solid exerts pressure .....................

Objective questions | Q 2.7

Fill in the blank

The gases are .......... dense.

Objective questions | Q 2.8

Fill in the blank

A solid is ............ rigid.

Objective questions | Q 3.1

Select the correct alternative

The diameter of a molecule is approximately

• 1 cm

• 10 cm

• 10-10 m

• 1 m

Objective questions | Q 3.2

Select the correct alternative

The inter-molecular forces are strongest in

• solids

• liquids

• gases

• both (i) and (ii)

Objective questions | Q 3.3

Select the correct alternative

The molecules ____________

• in solid, liquid and gas, move freely anywhere.

• in a solid, move freely within its boundary.

• in a liquid, move within its boundary.

• in a gas, move only within its boundary.

Objective questions | Q 3.4

Select the correct alternative

The solids are

• more dense

• less dense

• least dense

• highly compressible

Objective questions | Q 3.5

Select the correct alternative

The inter-molecular forces in liquids are

• as strong as in solids

• stronger than in solids

• weaker than in solids

• weaker than in gases

Objective questions | Q 4

Match the following columns

 Column A Column B A. A molecule is composed of i. does not exist free in nature. B. Ice, water and water vapour ii. can vibrate only up to about 10^-10m from their mean position. C. An atom iii. atoms. D. Gases iv. are the three states of water. E. The molecules of a solid v. occupy space

#### Selina solutions for Concise Physics Class 6 ICSE Chapter 1 Matter Exercise Short/Long answer questions

Short/Long answer questions | Q 1

Define matter. What is its composition?

Short/Long answer questions | Q 2

Name the three states of matter.

Short/Long answer questions | Q 3

What is a molecule?

Short/Long answer questions | Q 4

What is the approximate size of a molecule?

Short/Long answer questions | Q 5

One litre of water has 6.02 × 1026 molecules. Estimate the size of a molecule.

Short/Long answer questions | Q 6

What do you mean by inter-molecular spacing?

Short/Long answer questions | Q 7

Describe a simple experiment to illustrate the existence of inter-molecular spacing.

Short/Long answer questions | Q 8

What do you mean by inter-molecular forces?

Short/Long answer questions | Q 9

What are the forces of cohesion and adhesion?

Short/Long answer questions | Q 10

State three characteristics of molecules of matter.

Short/Long answer questions | Q 11

State the approximate spacing between two molecules of a matter.

Short/Long answer questions | Q 12

How do the solids, liquids, and gases differ in their following properties.
(a) Size
(b) Shape
(c) Density

Short/Long answer questions | Q 13

The molecules in a substance are in motion. What type of path do they follow?

Short/Long answer questions | Q 14

Describe a simple experiment to illustrate that molecules are not at rest, but they constantly move.

Short/Long answer questions | Q 15

Write down five general properties of solids, liquids, and gases.

Short/Long answer questions | Q 16

Give the molecular model for a solid and use it to explain why a solid has a definite volume and a definite shape.

Short/Long answer questions | Q 17

Describe the molecular model for a liquid. I-low does it explain that a liquid has no definite shape, but has a definite Volume?

Short/Long answer questions | Q 18

A gas has neither a definite volume nor a definite shape. Describe the molecular model to explain it.

Short/Long answer questions | Q 19

Distinguish between the three states of matter—solid, liquid, and gas on the basis of their molecular models

Short/Long answer questions | Q 20

Distinguish between solids, liquids, and gases on the basis of their following properties :
(a) compressibility
(b) fluidity
(c) rigidity
(d) expansion on heating

Short/Long answer questions | Q 21.1

What do you mean by the change of state of matter?

Short/Long answer questions | Q 21.2

Explain the change of a solid into a liquid at a constant temperature.

Short/Long answer questions | Q 21.3

Explain the change of a liquid into a gas at a constant temperature.

#### Selina solutions for Concise Physics Class 6 ICSE Chapter 1 Matter Exercise Additional questions

Additional questions | Q 1

Define matter.

Additional questions | Q 2

What is volume?

Additional questions | Q 3

What is mass?

Additional questions | Q 4

If an object weighs 6 kg on earth. What will be its weight on moon?

Additional questions | Q 5

If an object is taken to the moon from the earth what will be its mass?

Additional questions | Q 6

Name the smallest particle from which matter is made up.

Additional questions | Q 7

What are molecules?

Additional questions | Q 8

Give one difference between atoms and molecules.

Additional questions | Q 9.1

Define the Intermodular force of attraction.

Additional questions | Q 9.2

Define Intermodular space.

Additional questions | Q 10

Classify the following into solids, liquids, and gases. Oxygen, milk, common salt, wax, stone, water vapour, carbon-dioxide, sugar, mercury, coal, blood, butter, copper, coconut oil, kerosene.

Additional questions | Q 11

Why do solids, liquids, and gases differ in their physical states?

Additional questions | Q 12

What are fluids? Give two examples.

Additional questions | Q 13

Define interconversion of states of matter.

Additional questions | Q 14

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

Additional questions | Q 15

How a liquid changes into its gaseous state? Explain?

Additional questions | Q 16

Water cycle is an example of interconversion of states of water. Explain.

Additional questions | Q 17

State the general properties of a solid.

Additional questions | Q 18

What is the relation between intermolecular space and intermolecular force?

Additional questions | Q 19

Why liquids do not have definite shape?

Additional questions | Q 20

What happens when a solid is heated?

Additional questions | Q 21.1

Give a reason for the  Gases can be compressed easily.

Additional questions | Q 21.2

Give a reason for the Liquids can flow easily.

Additional questions | Q 21.3

Give a reason for the We need to classify things.

Additional questions | Q 21.4

Give a reason for the Pure substances have fixed melting or boiling points.

Additional questions | Q 21.5

Give a reason for the Electricity is not considered matter.

Additional questions | Q 22.1

Define Matter.

Additional questions | Q 22.2

Define Intermolecular force

Additional questions | Q 22.3

Define Element.

Additional questions | Q 22.4

Define the Atom.

Additional questions | Q 22.5

Define Molecule.

Additional questions | Q 23.1

Write your observation and conclusion for the following:

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

Additional questions | Q 23.2

Write your observation and conclusion for the following:

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

Additional questions | Q 24.1

Give reason :
Why do liquids and gases flow but solids do not?

Additional questions | Q 24.2

Give reason :

A gas fills up the space available to it.

Additional questions | Q 24.3

Give reason :

The odour of scent spreads in a room.

Additional questions | Q 24.4

Give reason :

We can walk through air.

Additional questions | Q 24.5

Give reason :

Liquids have a definite volume but no definite shape.

Additional questions | Q 25.1

Give reason :
When a teaspoon of sugar is added to half a glass of water and stirred, the water level in the glass does not rise.

Additional questions | Q 25.2

Give reason :

When an empty gas jar is inverted over a gas jar containing a coloured gas, the gas also spreads into the empty jar.

Additional questions | Q 25.3

Give reason :

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

Additional questions | Q 26.1

Differentiate between the following:
Liquids and gases

Additional questions | Q 26.2

Differentiate between the following:
Atoms and molecules

#### Selina solutions for Concise Physics Class 6 ICSE Chapter 1 Matter Exercise Objective type questions, Objective types questions, Additional type questions

Objective type questions | Q 1.01

Fill in the blank

Water is a matter because it has ............ and occupies ............

Objective type questions | Q 1.02

Fill in the blank

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

Objective type questions | Q 1.03

Fill in the blank

......... can flow.

Objective type questions | Q 1.04

Fill in the blank

The molecules are at a greater distance in ........ compared to liquids.

Objective type questions | Q 1.05

Fill in the blank

Water boils at .............

Objective type questions | Q 1.06

Fill in the blank

The physical state of a substance, which has a fixed volume but no fixed shape is ...............

Objective type questions | Q 1.07

Fill in the blank

All matter is made up of tiny particles called .................

Objective type questions | Q 1.08

Fill in the blank

Liquids have a definite ............

Objective type questions | Q 1.09

Fill in the blank

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

Objective types questions | Q 1.1

Fill in the blank

Molecules in a ............ are packed very closely.

Additional type questions | Q 1.11

Fill in the blank

Liquids have no definite ...........

Additional type questions | Q 1.12

Fill in the blank

When a gas is cooled, its molecules .............. energy.

Objective type questions | Q 1.13

Fill in the blank

Matter is anything that has .......... and occupies ...........

Objective type questions | Q 2.1

Write whether the following statement is true or false.

Only water can exist in three different states.

• True

• False

Objective type questions | Q 2.2

Write whether the following statement is true or false.

If the container in which a gas is collected has an opening, the gas will flow out and spread itself indefinitely.

• True

• False

Objective types questions | Q 2.3

Write whether the following statement is true or false.

Solids have the largest inter-molecular space.

• True

• False

Objective type questions | Q 2.4

Write whether the following statement is true or false.

There is no difference between evaporation and boiling.

• True

• False

Objective type questions | Q 2.5

Write whether the following statement is true or false

All solids, on heating, first change to the liquid and then to the gaseous state always.

• True

• False

Objective type questions | Q 2.6

Write whether the following statement is true or false.

The intermolecular force of attraction is the weakest in gases.

• True

• False

Objective type questions | Q 2.7

Write whether the following statement is true or false.

A gas has no free surface.

• True

• False

Objective type questions | Q 2.8

Write whether the following statement is true or false.

Intermolecular force of attraction is greater in gases than in liquids.

• True

• False

Objective type questions | Q 3.1

Write true or false for the statement. Rewrite the false statements correctly.

Matter cannot exist in different states.

• True

• False

Objective type questions | Q 3.2

Write true or false for the statement. Rewrite the false statement correctly.

If the intermolecular space is more than the intermolecular force will be weaker.

• True

• False

Objective type questions | Q 3.3

Write true or false for the statement. Rewrite the false statement correctly.

Solids and liquids can flow.

• True

• False

Objective type questions | Q 3.4

Write true or false for the statement. Rewrite the false statement correctly.

Solids can be compressed easily.

• True

• False

Objective type questions | Q 3.5

Write true or false for the statement. Rewrite the false statement correctly.

The smallest part of an element capable of independent existence is called an atom.

• True

• False

Objective type questions | Q 3.6

Write true or false for the statement. Rewrite the false statement correctly.

The intermolecular space in a gas is almost negligible.

• True

• False

Objective type questions | Q 4.1

For the following statement, say whether it describes a solid, a liquid, or a gas.

Particles move about very quickly.

Objective type questions | Q 4.2

For the following statement, say whether it describes a solid, a liquid, or a gas.

Particles are quite close together.

Objective type questions | Q 4.3

For the following statement, say whether it describes a solid, a liquid, or a gas.

Particles are far apart and move in all directions.

Objective type questions | Q 5.1

Match the following

 Column A Column B (a) Solids (i) Can flow in all directions (b) Sublimation (ii) The temperature at which a liquid changes into its gaseous state. (c) Boiling point (iii) Any number of free surfaces. (d) Gases (iv) Gaps between particles. (e) Intermolecular space (v) Changes of state from solid to gas.
Objective type questions | Q 5.2

Match the column.

 Column A Column B 1. iron and gold a. molecules are very far apart 2. melting b. pure substance 3. intermolecular space c. non-metals 4. compound d. the space between the molecules 5. gases e. changes from solid to liquid f. metals
Objective type questions | Q 6.1

Name the phenomenon which cause the following change.

Formation of water vapour from water.

Objective type questions | Q 6.2

Name the phenomenon which cause the following change.

Disappearance of camphor.

Objective type questions | Q 6.3

Name the phenomenon which cause the following change.

Conversion of ice into water.

Objective type questions | Q 6.4

Name the phenomenon which cause the following change.

Conversion of water into steam.

Objective type questions | Q 7.1

Give two examples for of the following

Substances which sublime.

Objective type questions | Q 7.2

Give two examples for of the following

Substances which do not change their states.

Objective type questions | Q 7.3

Give two examples for of the following

Substances which are rigid and not compressible.

#### Selina solutions for Concise Physics Class 6 ICSE Chapter 1 Matter Exercise Objective type questions

Objective type questions | Q 1.01

Multiple choice question.

Which one is a kind of matter:

• light

• petroleum

• sound

• heat

Objective type questions | Q 1.02

Multiple choice question.

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

• solid

• liquid

• gas

• water

Objective type questions | Q 1.03

Multiple choice question.

There are large intermolecular gaps in

• water

• iron ball

• common salt

• air

Objective type questions | Q 1.04

Multiple choice question.

All kinds of matter

• occupy space and have definite mass

• have mass and definite shape

• can change their states

• have definite volume

Objective type questions | Q 1.05

Multiple choice question.

A kind of matter which can sublime is

• water

• plastic

• milk

• iodine

Objective type questions | Q 1.06

Multiple choice question.

A substance which can change its state

• wood

• oxygen

• paper

• cloth

Objective type questions | Q 1.07

Multiple choice question.

The process by which a solid changes into a liquid is called

• Freezing

• melting

• condensation

• evaporation

Objective type questions | Q 1.08

Multiple choice question.

A solid is a state of matter that has

• no definite shape.

• large intermolecular space.

• high intermolecular force of attraction.

• no definite volume.

Objective type questions | Q 1.09

Multiple choice question.

Which of the following is a property of the liquids?

• they can flow

• they are malleable

• they have a definite shape

• they are rigid

Objective type questions | Q 1.1

Multiple choice question.

Gases

• cannot be compressed easily.

• occupy the entire space of the container.

• have definite shapes.

• cannot flow.

## Chapter 1: Matter

Objective questionsShort/Long answer questionsAdditional questionsObjective type questionsObjective types questionsAdditional type questions

## Selina solutions for Concise Physics Class 6 ICSE chapter 1 - Matter

Selina solutions for Concise Physics Class 6 ICSE chapter 1 (Matter) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CISCE Concise Physics Class 6 ICSE solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com provide such solutions so that students can prepare for written exams. Selina textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Concise Physics Class 6 ICSE chapter 1 Matter are Concept of Matter and And Composition, States of Matter - Solids, Liquids and Gases, States of Matter - Characteristics of Solids, Liquids and Gases (Shape, Texture and Volume)., Distinguishing Properties of Solids, Liquids and Gases..

Using Selina Class 6 solutions Matter exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in Selina Solutions are important questions that can be asked in the final exam. Maximum students of CISCE Class 6 prefer Selina Textbook Solutions to score more in exam.

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