Matter Class-6th Goyal Brothers Physics Solutions Ch-1

Matter Class-6th Goyal Brothers Physics Solutions Chapter-1. We Provide Step by Step Answers of Objective, True False , Fill in the blanks, Match the following , Study Questions of Chapter- 1 , Matter . Visit official Website  for detail information about ICSE Board Class-6.

Matter Class-6th Goyal Brothers

Physics Solutions Chapter-1

 Board ICSE Class 6th Subject Physics Book Name Goyal Brothers Theme-1 Matter Unit-1 Matter Topic Solution of exercise questions Session 2023-24

OBJECTIVE TYPE QUESTIONS

Physics Solutions Chapter-1

A. Fill in the blanks :

1. Liquids are practically _incompressible_.
2. Gases do have _weight_.
3. _Vaccum_ is not matter.
4. Gases do not have any _free_ surface.
5. _Molecules_ are the building blocks of all material.

B. Statement given below are incorrect. write the correct correct statement:

1. A solid has only one free surface.

Correct Statement: A liquid has only one free surface.

2. A liquid does not have a definite volume.

Correct Statement: A liquid have a definite volume.

3. Gases are not compressible.

Correct Statement: Liquids are not compressible.

4. In case of solids, the intermolecular forces are almost negligible.

Correct Statement: In case of solids, the intermolecular forces are maximum.

5. Love, hatred and suspicion are examples of matter.

Correct Statement: Love, hatred and suspicion are examples of emotions.

(e) solid and liquid

Column A Column B

D. Write ‘True’ or ‘False’ for the following statements :

1. The molecules of solid are very tightly packed. [T]
2. Gases have neither definite shape nor definite volume. [T]
3. Vacuum is not matter. [T]
4. Intermolecular spaces are minimum in case of oxygen gas. [F]
5. In liquids, interchange of positions of molecules is not possible. [F]

1. Gases have :

(a) infinite number of free surfaces

(b) only one free surface

(c) two free surfaces

(d) no free surface

Ans: (d) no free surface

(a) silver

(b) alcohol

(c) water

(d) oxygen

Ans: (a) silver

(a) ice

(b) alcohol

(c) milk

(d) water

Ans: (a) ice

4. Solids do not flow but can be :

(a) compressed

(b) not kept in a container

(c) heaped

(d) liquified

Ans: (c) heaped

5. The state of matter which can be easily compressed is :

(a) solid

(b) liquid

(c) gas

(d) both (b) and (c)

Ans: (c) gas

STUDY QUESTIONS

(b)What is matter comprised of ? Explain briefly.

(a) Anything that has mass and occupies space is called matter. A matter is made up of tiny particles called atoms.

The three states of matter are

• (a) Solids – it has a definite shape and volume. Example – wood, iron, ice etc.
• (b) Liquid – it has a definite volume but not definite shape. Example – water, milk, oil etc.
• (c) Gases – it neither has definite shape nor a definite volume. Example – air, hydrogen, oxygen etc

(b) The matter is comprised of molecules. Further molecules are made up of atoms. Therefore, atoms and molecules are the building blocks of all matter.

(b) Explain why liquids can flow but are not compressible.

(a) Liquid is one of the three principle states of matter. In its characteristics, a liquid is intermediate between a gas and a solid, the other two principle states. Like gases, liquids can flow and take on the shape of the container in which they are placed—characteristics not found in solids.

(b) Liquids can flow but are not compressible because the particles are packed close together. Liquids are incompressible, but gases are readily compressible.

Question 3.

(a) What is gas? Give two examples.

(b) Distinguish between solid, liquid and gas on the basis of free surfaces.

(a) Gas is a state of matter which has only definite mass but no definite shape and volume. It takes up the shape of the container. e.g. — Carbon dioxide, oxygen, etc.

(b) Solids can have any number of free surfaces.

Liquids have only one free surface.

Gases have no free surface.

Question 4. Why do gases have no definite shape or volume?

Answer: Gases do not have a definite shape or volume because the molecules in gases are very loosely packed, they have large intermolecular spaces and hence they move around. The force of attraction between molecules is also very less, as a result gases acquire any shape or any volume.

Question 5. Find the odd one out of :

Table, Vacuum, Chalk, Chair and stone

Question 6. Distinguish between the properties of a solid, a liquid and a gas with respect to:

(a) intermolecular forces

(b) intermolecular spaces

(c) how to contain them

(d) compressibility

(e) position of molecules with respect to each other

 Sl.No. Characteristics Solid Liquid Gas 1. intermolecular forces solid has very strong intermolecular force. liquid has less intermolecular force as compared to solid Gases have negligible intermolecular force. 2. intermolecular spaces very small small but more than solid very large 3. how to contain them Solid does not need a vessel to contain them liquid needs a vessel to contain them Gas needs a vessel to contain them 4. compressibility can not be compressed slightly compressed easily compressed 5. position of molecules with respect to each other In solid position of molecules are fixed position of molecules in liquids are not fixed In gases position of molecules are not fixed, it can freely move in all direction.

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