Solids, liquids, gases and change of state.

Which of the following correctly describes the change of state when a gas changes to a liquid?

1 point

Boiling

Condensing

Evaporating

Freezing

Clear selection

1 point

A

B

C

D

Clear selection

Which of the following statements correctly describes particle movement when a solid changes to a liquid?

1 point

A: The particles are held in place but as the substance heats up they vibrate with more energy. When the vibrations have so much energy they overcome the forces of attraction that are holding the particles in place.

B: The particles are touching but have enough energy to move past each other. As the substance cools the particles move slower until the forces of attraction between the particles are strong enough to hold them in place and then the particles just vibrate.

C: The particles are far apart and move with constant, rapid, random motion. As the substance cools down the particles slow down until the forces of attraction between the particles are strong enough to attract them to each other.

D: The particles are touching but have enough energy to move past each other. As the substance heats the particles move faster until the particles have so much energy they can break free from the forces of attraction between the particles. At this point the particles are far apart and move with constant, rapid, random motion.

Clear selection

Which of the following statements correctly describes particle movement when a liquid is boiled?

1 point

A: The particles are held in place but as the substance heats up they vibrate with more energy. When the vibrations have so much energy they overcome the forces of attraction that are holding the particles in place.

B: The particles are touching but have enough energy to move past each other. As the substance cools the particles move slower until the forces of attraction between the particles are strong enough to hold them in place and then the particles just vibrate.

C: The particles are far apart and move with constant, rapid, random motion. As the substance cools down the particles slow down until the forces of attraction between the particles are strong enough to attract them to each other.

D: The particles are touching but have enough energy to move past each other. As the substance heats the particles move faster until the particles have so much energy they can break free from the forces of attraction between the particles. At this point the particles are far apart and move with constant, rapid, random motion.

Clear selection

1 point

A

B

C

D

Clear selection

1 point

A

B

C

D

Clear selection

1 point

A

B

C

D

Clear selection

1 point

A

B

C

D

Clear selection

1 point

A

B

C

D

Clear selection

1 point

A

B

C

D

Clear selection