Selina solutions for Concise Chemistry [English] Class 6 ICSE chapter 3 - Matter [Latest edition]

Define matter

What are the two main types of matter?

Give two examples for each type of matter

Differentiate between living and non-living matter.

Select natural and man-made matter from the following list:

Wood, plastic, silk, medicines, detergents, coal, water, ceramic, cotton, glass, nylon, fruits.

Name the smallest particle from which matter is made up.

What are molecules?

Give one difference between atoms and molecules.

Define Intermodular force of attraction

Define Intermodular space

Name the three states of matter and define them.

What are fluids? Give two examples

Classify the following into solids, liquids and gases.

Oxygen, milk, common salt, wax, stone, L.P.G, carbon- dioxide, sugar, mercury, coal, blood, butter, copper, coconut oil, kerosene.

Give reasons

Liquids and gases flow but solids do not?

Give reasons

A gas fills up the space available to it.

Give reasons

 The odour of scent spreads in a room.

Give reasons

We can walk through air.

Give reasons

Liquids have definite volume but no definite shape

Give reasons

When a teaspoon of sugar is added to half a glass of water and stirred, the water level in the glass remains unchanged.

Give reasons

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

Give reasons

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

Define: cohesive force

Define: diffusion

Define: Brownian movement

Why is an egg kicked out of a bottle when air is blown inside the bottle?

State the three effects of heat on matter

 Define: interconversion of states of matter.

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

Define the following terms: Fusion

Define the following terms: Vaporisation

Define the following terms: Condensation

Define the following terms: Sublimation

Define the following terms: Diffusion

Define the following terms:  Melting point

Define the following terms: Boiling point

Define the following terms: Liquefaction

Differentiate between: Solidification and condensation

Differentiate between: Melting and boiling 

Differentiate between: Gas and vapour

Differentiate between: Miscible and immiscible liquids.

Give reasons:

 How is interconversion of states of matter different from chemical reaction?

Give reasons:

Why a solid does not flow, but a liquid flows?

How does a liquid changes into its gaseous state? Explain

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

What happens to a metal ball when it is heated? What does this show?

Why does a candle become smaller on burning with time?

Fill in the blanks:

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

Fill in the blanks:

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

Fill in the blanks:

______ and ______ can flow.

Fill in the blanks:

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

Fill in the blanks:

Water boils at ______.

Fill in the blanks:

The physical state of a substance, which has neither fixed volume nor fixed shape is a ______.

Write whether the following statements are true or false:

Only water can exist in three different states

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

Write whether the following statement is true or false:

Solids have the larger inter-molecular space

Write whether the following statement is true or false:

 There is no difference between evaporation and boiling

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

Write whether the following statement is true or false:

The intermolecular force of attraction is the weakest in gases.

Write whether the following statement is true or false:

A gas has no free surface.

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

Particles move about very quickly but do not leave the surface

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

Particles are quite close together

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

Particles are far apart and move in all directions

Match the following

Name the phenomenon which causes the following changes:

Formation of water vapour from water

Name the phenomenon which causes the following changes:

Disappearance of camphor when exposed to air

Name the phenomenon which causes the following changes:

Conversion of ice into water

Name the phenomenon which causes the following changes:

Conversion of water into steam

Give two examples of the following:

Substances which sublime.

Give two examples of the following:

Substances which do not change their states.

Give two examples of the following:

Substances which are rigid and not compressible

 Which one is a kind of matter

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

There are large intermolecular gaps in

All kinds of matter

A kind of matter which can sublime is

A substance which can change its state

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

Fill the following chart showing twelve solids, twelve liquids, four gases and eight materials.

Think and try to find a way to demonstrate water cycle in class

To identify materials of common use
Procedure – Just move around in your house – in the drawing room, sitting room, bedroom, kitchen, bathroom etc. Identify the things and All in the blanks in the table given below

Explain the term ‘matter'

One kind of matter can be distinguished from another by its physical properties and chemical properties.

State the main physical properties of matter.

The three main states of matter are solids, liquids, and gases. Compare the three states with reference to the following characteristics of matter

(a) volume
(b) shape
(c) compressibility
(d) diffusion.

Matter in any state is composed of particles. Compare the three states of matter i,e. solids, liquids, and gases with reference to:

(a) intermolecular space
(b) the intermolecular force of attraction
(c) movement of particles

Describe simple experiments to prove that solids occupy space

Describe simple experiments to prove that solids have mass

Describe simple experiments to prove that solids have a definite volume

Describe simple experiments to prove that liquids have mass

Describe simple experiments to prove that liquids have a definite volume

Describe simple experiments to prove that liquids have no definite shape

Describe simple experiments to prove that gases occupy space.

Describe simple experiments to prove that gases have mass.

Describe simple experiments to prove that gases have no definite volume or shape.

Explain the term ‘Interconversion of matter’. With reference to ice, water, and water vapour show diagrammatically the change of state of matter from solid to liquid to gaseous and back to the original state.

Explain the term melting

Explain the term vaporization

Explain the term condensation

Explain the term freezing

Explain the term melting point

Explain the term boiling point

State what would you observe if

(a) sugar is added to pebbles take in a plastic beaker
(b) sand is added to glass balls in a beaker.  What would you conclude from this imaginative demonstration?

With the help of a simple diagram how would you show that – solids expand on heating

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.

Solids and liquids have a definite ____ but gases do not.

Complete the statement given below by selecting the correct word.

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

Complete the statement given below by selecting the correct word.

The conversation of vapour into a liquid is called ____.

Complete the statement given below by selecting the correct word.

____ is an example of a crystalline substance.

State which of the following statement is true or false. If false write the correct statement.

Solids are highly compressible and rigid.

State which of the following statement is true or false. If false write the correct statement.

Atoms/molecules in gases move only about their own positions.

State which of the following statement is true or false. If false write the correct statement.

The conversion of water to ice is called freezing.

Fill in the blank with the correct word Given below.

From the three states of matter, _____ expand the least.

Fill in the blank with the correct word Given below.

Brownian movement is maximum in ____.

Fill in the blank with the correct word Given below.

Cohesive forces are negligible in ____

Fill in the blank with the correct word Given below.

Matter can change from one state to another by the change in ____

Fill in the blank with the correct word Given below.

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

Fill in the blank with the correct word Given below.

Intermingling of molecules is called ____

Fill in the blanks with the correct word/s from the bracket.

Ice on absorption of heat converts to ‘X’ a process called ____ [vaporization / melting]. ‘X’ changes to water vapour on ____ [heating / cooling]. Water vapour changes back to ‘X’ on ____ [freezing / condensation]. The constant temperature at which ice changes into ‘X’ is called its ____ [fusion point / melting point / boiling point].

State the property of the following substance.

Chlorine gas has a – strong irritating odor.

State the property of the following substance.

Sodium nitrate is soluble in water, but calcium carbonate is not.

State the property of the following substance.

Magnesium reacts with dilute hydrochloric acid, liberating hydrogen gas.

State the property of the following substance.

Manganese dioxide, a catalyst which alters the rate of a chemical reaction is black in colour.

State the property of the following substance.

The melting point of ice is 0°C.

State the property of the following substance.

Lead chloride reacts with barium sulphate to give a white precipitate of lead sulphate.

State if the following is a physical property of a substance.

Water acidified with dilute sulphuric acid is a good conductor of electricity.

State the property of the following substance.

Naphthalene on heating directly turns into vapour.

State the property of the following substance.

Hydrogen sulphide gas has a strong rotten egg odour.

State the property of the following substance.

Sulphur is a yellow amorphous powder insoluble in water.

Match the characteristics of the three states of matter in List I with their correct answer from List II.

Match the arrangement of atoms in the three states of matter in List I with the correct state in List II.

State the correct term from A, B, C, D, E, or F in List II which represents the change of state of matter or its relevant property from List I.