Kinetic Particle Theory

In which state do particles slide past each other?

• liquid

• vapour

• gaseous

• solid

Particles have the highest kinetic energy in this state.

• gas

• liquid

• semi-solid

• solid

Tags

NGSS.MS-PS3-1

Particles have the strongest forces of attraction between them in this state.

• gas

• liquid

• semi-solid

• solid

What would happen to helium particles in a balloon when the balloon is compressed?

• Helium particles shrank in size.

• Helium particles move into a regular pattern.

• Helium particles have less space between each other.

• Helium particles vibrate at their fixed positions.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-2

In which state are particles in a disorderly arrangment?

• solid

• liquid

• gas

• none of the above

Which of the following statements about the particle of a gas is true?

• Gases can be compressed because their particles are smaller than those of liquids or solids.

• Gases can be compressed because there is plenty of space between their particles.

• Gases can be compressed because they have low boiling points.

• Gases can be compressed because their particles are more elastic than those of liquids or solids.

Which of the following is a correct description for the particles present in solids?

• closely packed and does not move

• closely packed and vibrate in fixed positions

• closely packed and slide past one another

• far apart and move rapidly in all directions

Sodium melts at 98^oC and boils at 890^oC. Which diagram best shows the arrangement of sodium atoms at 100^oC?

• A

• B

• C

• D

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-4

What happens when water evaporates?

• Particles of the water vapour lose energy to their surroundings.

• Particles of the water vapour are spaced further apart.

• The number of water particles increases.

• The temperature of the remaining water rises.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A solid compound X was heated steadily for 20 minutes. The graph below shows the change in temperature of X with time. At what temperature did X melt?  

• 20°C

• 40°C

• 90°C

• 100°C

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4