Matter

Q.

How many atoms are there in a molecule of carbon dioxide?

1. 1

2. 2

3. 3

4. 4

Q.

Which of the following cannot be classified as matter?

1. Chalk

2. Car

3. Energy

4. Soil

Q.

Substances which occupy space, have mass and can be felt by human senses are called ________.

1. Thought

2. Cold

3. Matter

4. Smell

Q. Which of the following are the characteristics of the particles of a matter?

1. They attract each other.
2. They constantly move.
3. They have spaces between them.
4. They are very huge.

Q.

Mass is an intrinsic property of a body and it is same at all places at all time.

1. True
2. False

Q.

What are the characteristic properties of a pure substance? Why do we need them ?

Q.

Light is matter.

1. False

2. True

Q. is a major component in a solution and is a minor component in a solution

1. Componds
2. Solute
3. Mixture
4. Solvent

Q.

Pure substances have a fixed ……. and ……. set of properties.

Q.

Which of the following is a molecule of a compound?

1. Ozone

2. Chlorine

3. Water

4. Hydrogen

Q.

Matter is made up of particles.

1. False

2. True

Q.

What are the characteristics exhibited by a pure substance? [2 MARKS]

Q.

Which of the following molecules is made up of different kinds of atoms?

1. Water molecule

2. Oxygen molecule

3. Hydrogen molecule

4. Nitrogen molecule

Q.

What is matter?

1. Anything that has some mass

2. Both A and B

3. Either A or B

4. Anything that occupies some space

Q.

A space that is devoid of matter is called _______.

1. Sky

2. Vacuum

3. Black hole
4. Universe

Q.

if an elephant and a stone are dropped fron eiffel tower without accelaretion who will reach earth 1st?

Q.

How many atoms are present in a molecule of HNO_3?

Q.

Matter with definite and constant composition, and distinct chemical properties is known as:

1. element

2. mixture

3. pure substance

4. impure substance

Q.

4. Define the following terms:

(a) Matter

Q.

Give a brief summary of the differences of elements , compounds and mixtures.

Q.

The total matter contained in a body is called

1. weight

2. force

3. mass

4. gravity

Q.

Weight changes from place to place.

1. True

2. False

Q. Which amongst the following have the maximum random movement of particles in it?

1. Iron nail
2. Water vapour
3. Wooden table
4. Fresh juice

Q.

Is this a pure substance or mixture?

1. Cannot be ascertained.

2. None of the choices

3. Mixture

4. Pure substance

Q. Which of the following are the characteristics of the particles of a matter?

1. They attract each other.
2. They have spaces between them.
3. They constantly move.
4. They are very huge.

Q. Stretching of a rubber band and inflating a balloon is a reversible change. Give reason.

Q.

Which method of separation is witnessed here?

1. Transpiration

2. Evaporation

3. Sublimation

4. Filteration

Q.

Define: Molecule

Q.

7. Name the following compounds and also name the elements present in each of them. (You can ignore the numbers when naming these compounds.)

ix. $\mathrm{HgS}$

Q.

Mass and weight are different from each other.

1. False

2. True