Question

when a liquid loses kinetic energy, what is most likely going to happen?
the molecules will move faster and the substance will become a gas.
the molecules will move faster and the substance will become a solid.
the molecules will move slower and the substance will become a solid.
the molecules will move slower and the substance will become a gas.
question 2
1 pts
heat always moves from
warm to warm
warm to cool
cool to cool
cool to warm

Explanation:

Question 1

Kinetic energy of liquid molecules: losing kinetic energy means molecules slow down. Phase change: slower - moving molecules in a liquid can lead to freezing (becoming a solid, as solids have less molecular motion than liquids). Analyzing options:

• Option 1: Faster molecules and gas (gas has more kinetic energy than liquid) is wrong.
• Option 2: Faster molecules and solid (solid has less kinetic energy) is wrong.
• Option 3: Slower molecules and solid (matches the logic of losing KE and phase change to solid) is correct.
• Option 4: Slower molecules and gas (gas needs more KE) is wrong.

Heat transfer principle: Heat is energy transfer due to temperature difference. It flows from higher temperature (warmer) to lower temperature (cooler) to reach thermal equilibrium. So heat moves from warm to cool.

Answer:

The molecules will move slower and the substance will become a solid.

Question 2