Particles of Matter Are Always in Motion

Q.

Is humans are matter? Give reasons.

Q. Take two similar balloons and inflate them equally. Suspend them on either side of a meter scale, as shown in the fig-1. Balance the scale in middle with the help of a peg. Later, puncture one of the balloons. You will observe that air escapes from the balloon and the meter scale tilts towards the inflated balloon. This experiment proves that-

1. Air does not occupy space
2. Air is not a matter
3. Air has no mass
4. Air has mass

Q. All matter takes up space. What is the name given to the amount of space something takes up?

Q.

Question 2:

Why does the level of juice gets little increases, when we add some ice cubes to a glass of juice?

Q. Which of the following statement is true about the matter?

1. They are weightless
2. They have no mass
3. Occupies no space
4. Occupies space and has mass

Q.

Which of the following statement is true for matter?

1. Occupies space and has mass

2. They are weightless

3. They have no mass

4. Occupies no space

Q. Pair the physical state of given substance with the property associated to it.

1. Liquid
2. Indefinite shape & volume
3. Solid
4. Definite shape & volume
5. Indefinite shape & definite volume
6. Gas

Q.

Particles of matter possess kinetic energy and they are in constant motion.

1. True

2. False

Q.

A gas exerts pressure on the walls of the container. Identify the correct reason for the same.

1. Gaseous particles move randomly and frequently collide with walls. Pressure is resultant of these collisions.

2. Gaseous particles doesn't exert pressure on the walls of the container

3. Gaseous particles are hardest among the states of matter.

4. Gaseous particles do not move.

Q.

Particles of matter move continuously in a random manner.

1. True

2. False

Q. Particles in solids have ___________.

1. highest pressure
   
2. maximum kinetic energy
   
3. maximum interparticle distances
4. least kinetic energy
   

Q.

Molecules in the __________ phase have the least amount of energy.