Sec 3 Three State of Matter

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

• The particles of a gas vibrate about fixed positions.
• The particles of a gas are packed close together in a disorderly arrangement.
• The particles of a gas are far apart and move in all directions.
• The particles of a gas are stationary in an orderly arrangement.

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.

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. 

A substance Y has a melting point of –7ºC and a boiling point of 63ºC. At which temperature is Y a liquid?

• A
• B
• C
• D

Tags

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 speed of the particles of the water increases.
• The temperature of the remaining water rises.

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

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.

What is/are the physical state(s) of X at 100°C?

• Solid
• Solid and liquid
• Gas
• Liquid and gas