Thermal Energy Unit Test

2 of 102 of 10 Items

Question
Water boils at 100°C and turns into steam. Which similarities or differences are there between water at 100°C and steam at 100°C? (1 point)
Responses

The particles will have more space between them as a liquid, but they will be moving at the same speed in both states.
The particles will have more space between them as a liquid, but they will be moving at the same speed in both states.

The particles will have more space between them as a liquid, but they will be moving faster as steam.
The particles will have more space between them as a liquid, but they will be moving faster as steam.

The particles will have more space between them as steam, but they will be moving at the same speed in both states.
The particles will have more space between them as steam, but they will be moving at the same speed in both states.

The particles will have more space between them and will be moving at higher speeds as steam.

5 answers

The correct answer is:
The particles will have more space between them and will be moving at higher speeds as steam.
An ice cube tray full of water is put into a freezer. Which energy change occurs in the particles in the water as it undergoes a phase change from a liquid to a solid?(1 point)
Responses

The potential energy increases due to the looser arrangement of the particles.
The potential energy increases due to the looser arrangement of the particles.

The potential energy decreases due to the looser arrangement of the particles.
The potential energy decreases due to the looser arrangement of the particles.

The potential energy increases due to the tighter arrangement of the particles.
The potential energy increases due to the tighter arrangement of the particles.

The potential energy decreases due to the tighter arrangement of the particles.
The correct answer is: The potential energy decreases due to the tighter arrangement of the particles.
An increase in thermal energy leads to _____(1 point)
Responses

an increase in heat and a decrease in kinetic energy until a phase change occurs.
an increase in heat and a decrease in kinetic energy until a phase change occurs.

a decrease in heat and a decrease in kinetic energy until a phase change occurs.
a decrease in heat and a decrease in kinetic energy until a phase change occurs.

a decrease in heat and an increase in kinetic energy until a phase change occurs.
a decrease in heat and an increase in kinetic energy until a phase change occurs.

an increase in heat and an increase in kinetic energy until a phase change occurs.
The correct answer is: an increase in heat and an increase in kinetic energy until a phase change occurs.
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