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Selina solutions for Concise Chemistry Class 7 ICSE chapter 1 - Matter and Its Composition [Latest edition]

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Concise Chemistry Class 7 ICSE - Shaalaa.com

Chapter 1: Matter and Its Composition

ExerciseAdditional questionsObjective type questionsMultiple choice questions

Exercise

Selina solutions for Concise Chemistry Class 7 ICSE Chapter 1 Matter and Its Composition Exercise

Exercise | Q 1

Define matter.

Exercise | Q 2

What is the difference between mass and weight?

Exercise | Q 3

If an object weighs 6 N on earth what will be its weight on moon. What will be the change in its mass?

Exercise | Q 4.1

Write your observation and conclusion for the following:

When few marbles are put in a glass half-filled with water.

Exercise | Q 4.2

Write your observation and conclusion for the following:

Ice is kept at room temperature.

Exercise | Q 5

State three main characteristics of the particles of matter.

Exercise | Q 6

Differentiate between an atom and a molecule.

Exercise | Q 7.1

Define: Solid

Exercise | Q 7.2

Define: Liquid.

Exercise | Q 7.3

Define: Gas.

Exercise | Q 8

Why are liquids and gases called as fluids.

Exercise | Q 9.1

Define interconversion of states of matter.

Exercise | Q 9.2

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

Exercise | Q 9.3

Under what conditions do solids, liquids and gases change their state.

Exercise | Q 10.1

Give reason :
When a spoon is dipped in a glass containing some water the level of water rises but when a spoon of sugar is added to it and stired, the water level does not rise?

Exercise | Q 10.2

Give reason:

A drop of ink added to water in a glass turns whole water blue.

Exercise | Q 11.1

Fill in the blank :

Air is a matter because it has ________ and _______ and it can be _________

Exercise | Q 11.2

Fill in the blank:

The molecules are made up of ________

Exercise | Q 11.3

Fill in the blank:

The quantity of matter in an object is called its _____

Exercise | Q 11.4

Fill in the blank :

The state of matter with definite volume and definite shape is called______

Exercise | Q 11.5

Fill in the blank :

The substances which can flow are called ________

Exercise | Q 12.1

Name the terms for the change of a solid into liquid.

Exercise | Q 12.2

Name the terms for the force of attraction between the molecules of matter.

Exercise | Q 12.3

Name the terms for the particles of matter which may or may not have independent existence.

Exercise | Q 12.4

Name the terms for the process due to which a solid directly changes into its vapours.

Exercise | Q 12.5

 Name the terms for the change of vapour into a liquid.

Exercise | Q 13

Classify the following into solid, liquid and gas :
Coal, kerosene, wood, oxygen, sugar, blood, water vapour, milk, wax.

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Additional questions

Selina solutions for Concise Chemistry Class 7 ICSE Chapter 1 Matter and Its Composition 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 Intermolecular force of attraction.

Additional questions | Q 9.2

Define  Intermolecular 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 inter conversion 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 a definite shape ?

Additional questions | Q 20

What happens when a solid is heated ?

Additional questions | Q 21.1

Give reason Gases can be compressed easily .

Additional questions | Q 21.2

Give reason Liquids can flow easily 

Additional questions | Q 21.3

Give reason We need to classify things .

Additional questions | Q 21.4

Give reason Pure substances have fixed melting or boiling point .

Additional questions | Q 21.5

Give reason Electricity is not considered matter .

Additional questions | Q 22.1

Define the following term  of Matter .

Additional questions | Q 22.2

Define the following term Intermolecular force .

Additional questions | Q 22.3

Define the following term Element .

Additional questions | Q 22.4

Define the following term  of Atom .

Additional questions | Q 22.5

Define the following term of 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

How will you prove by an experiment that solids occupy space ?

Additional questions | Q 25

Name the three states of matter and define them.

Additional questions | Q 26.1

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

Additional questions | Q 26.2

Give reason of A gas fills up the space available to it.

Additional questions | Q 26.3

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

Additional questions | Q 26.4

Give reason of We can walk through air.

Additional questions | Q 26.5

Give reason of Liquids have definite volume but no difinite shape.

Additional questions | Q 27.1

Give reason  of 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 27.2

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 27.3

Give reason

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

Additional questions | Q 28

Give an experiment to explain that there are intermolecular spaces between water molecules.

Additional questions | Q 29.1

Differentiate between the following.

Liquids and gases .

Additional questions | Q 29.2

Differentiate between the following.

Atoms and Molecules .

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Objective type questions

Selina solutions for Concise Chemistry Class 7 ICSE Chapter 1 Matter and Its Composition Objective type questions

Objective type questions | Q 1.01

Fill in the blank.

Water is a matter because it has mass 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 liquids

Objective type questions | Q 1.1

Fill in the blank

Molecules in a ________ are packed very closely.

Objective type questions | Q 1.11

Fill in the blank

Liquids have no definite ______

Objective 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 2.01

State whether the following statement is True or False:

Only water can exist in three different states

  • True

  • False

Objective type questions | Q 2.02

 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 type questions | Q 2.03

Write whether the following statement are true or false.

 Solids have the largest inter-molecular space.

  • True

  • False

Objective type questions | Q 2.04

Write whether the following statement are true or false.

There is no difference between evaporation and boiling.

  • True

  • False

Objective type questions | Q 2.05

Write whether the following statement are 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 2.06

Write whether the following statement are true or false.

The intermolecular force of attraction is the weakest in gases.

  • True

  • False

Objective type questions | Q 2.07

Write whether the following statement are true or false.

A gas has no free surface.

  • True

  • False

Objective type questions | Q 2.08

Write whether the following statement are true or false.

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

  • True

  • False

Objective type questions | Q 2.09

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

Matter cannot exist in different states.

  • True

  • False

Objective type questions | Q 2.1

Write true or false for each 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 2.11

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

 Solids and liquids can flow.

  • True

  • False

Objective type questions | Q 2.12

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

Solids can be compressed easily.

  • True

  • False

Objective type questions | Q 2.13

Write true or false for each 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 2.14

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

The intermolecular space in a gas is almost negligible.

  • True

  • False

Objective type questions | Q 3.1

For the following statements, say whether it describes a solid, a liquid or a gas.
Particles move about very quickly.

Objective type questions | Q 3.2

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

Particles are quite close together

Objective type questions | Q 3.3

For the following statements, 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

Name the phenomenon which causes the Formation of water vapour from water is 

Objective type questions | Q 5.2

Name the phenomenon which causes the Disappearance of camphor is

Objective type questions | Q 5.3

Name the phenomenon which causes the Conversion of ice into water is

Objective type questions | Q 5.4

Name the phenomenon which causes the Conversion of water into steam is 

Objective type questions | Q 6.1

Give two examples for the following :

Substances which sublime.

Objective type questions | Q 6.2

Give two examples for the following :

Substances which do not change their states.

Objective type questions | Q 6.3

Give two examples for the following :

Substances that are rigid and not compressible.

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Multiple choice questions

Selina solutions for Concise Chemistry Class 7 ICSE Chapter 1 Matter and Its Composition Multiple choice questions

Multiple choice questions | Q 1

Which one is a kind of matter:

  • light

  • petroleum

  • sound

  • heat

Multiple choice questions | Q 2

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

  • solid

  • liquid

  • gas

  • water

Multiple choice questions | Q 3

There are large intermolecular gaps in

  • water

  • iron ball

  • common salt

  • air

Multiple choice questions | Q 4

All kinds of matter

  • occupy space and have definite mass

  • have mass and definite shape

  • can change their states

  • have definite volume

Multiple choice questions | Q 5

A kind of matter which can sublime is

  • water

  • plastic

  • milk

  • iodine

Multiple choice questions | Q 6

A substance which can change its state

  • wood

  • oxygen

  • paper

  • cloth

Multiple choice questions | Q 7

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

  • freezing

  • melting

  • condensation

  • evaporation

Multiple choice questions | Q 8

A solid is a state of matter that has

  • no definite shape

  • large intermolecular space.

  • high intermolecular force of attraction

  • no definite volume

Multiple choice questions | Q 9

Which of the following is a property of the liquids?

  • they can flow

  • they are malleable

  • they have a definite shape

  • they are rigid

Multiple choice questions | Q 10

Gases

  • cannot be compressed easily

  • occupy the entire space of the container

  • have definite shapes

  • cannot flow

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Chapter 1: Matter and Its Composition

ExerciseAdditional questionsObjective type questionsMultiple choice questions
Concise Chemistry Class 7 ICSE - Shaalaa.com

Selina solutions for Concise Chemistry Class 7 ICSE chapter 1 - Matter and Its Composition

Selina solutions for Concise Chemistry Class 7 ICSE chapter 1 (Matter and Its Composition) 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 Chemistry Class 7 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 Chemistry Class 7 ICSE chapter 1 Matter and Its Composition are Definition of Matter, The Matter Has Mass and Occupies Space - Explanation., Concept of Composition of Matter.

Using Selina Class 7 solutions Matter and Its Composition 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 7 prefer Selina Textbook Solutions to score more in exam.

Get the free view of chapter 1 Matter and Its Composition Class 7 extra questions for Concise Chemistry Class 7 ICSE and can use Shaalaa.com to keep it handy for your exam preparation

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