Question

A student puts a glass of water in the freezer. Later, he notices ice forming on the surface of the water. Which property of water best explains why ice forms on its surface?
A. Ice has more surface tension than liquid water.
B. Ice is less dense than liquid water.
C. Ice has a lower freezing point than liquid water.
D. Ice is more cohesive than liquid water.
E. Ice can dissolve more oxygen than liquid water.

Answer 1

Answer: Option (C) is the correct answer.

Explanation:

When a glass of water is held in the refrigerator then kinetic energy of water molecules starts to decrease as there is less temperature in the freezer.

As a result, the water starts to convert into ice because kinetic energy of water molecules converts into potential energy.

Thus, we can conclude that out of the given options, the property ice has a lower freezing point than liquid water best explains why ice forms on its surface.

Answer 2

C.ice has a lower freezing point than liquid water

hope this helps