BWS Kinetic particle theory

Which of the following is a correct description for solids?

• closely arranged and in fixed positions

• closely arranged and vibrate in fixed positions

• closely arranged and can move around

Which statement about the molecules in the gas carbon dioxide is correct?

• The molecules are close together.

• The molecules are diatomic.

• The molecules move randomly.

• The molecules all move with the same speed.

When something goes from gas to liquid, it is called...

• Evaporation

• Condensation

• Deposition

• Freezing

Something that goes from liquid to gas is...

• Evaporation

• Melting

• Freezing

• Sublimation

Which of the following sentences are true about solids?

• Solids are rigid, have a fixed shape but not a fixed volume

• Solids are not rigid, have a fixed shape and no fixed volume

• Solids are rigid, have a fixed shape and a fixed volume

An inflated balloon is placed in a refrigerator. Which statement describes the movement of the gas particles in the balloon?

• The particles move more slowly and become closer together.
• The particles move more slowly and become further apart.
• The particles move faster and become closer together.
• The particles move faster and become further apart. 

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following statements about the kinetic particle theory is not true?

• The particles of a gas move faster than those of a liquid.
• The particles of a solid have more kinetic energy than those of a gas.
• The particles that make up matter are always moving.
• The forces of attraction between the particles of a solid are very strong.

The graph below shows part of the cooling curve of a substance. Which row correctly identifies P, Q and R?

• P: Gas, Q: Gas and Liquid, R: Liquid
• P: Liquid, Q: Gas and Liquid, R: Gas
• P: Gas, Q: Liquid, R: Solid
• P: Solid, Q: Liquid, R: Gas

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

A solid compound X was heated steadily for 20 minutes. The graph below shows the change in temperature of X with time. What is the boiling point of X?

• 20°C
• 40°C
• 90°C
• 100°C