Physics 2001 JAMB Past Questions - Question 10: Ice cubes are added to a glass of warm water. The glass and water are cooled by

Correct Answer

D

Explanation

When you add ice cubes to a glass of warm water, the following processes occur:

1. Heat Transfer: The warm water has a higher temperature than the ice cubes, so heat will transfer from the warm water to the ice cubes. This heat transfer will continue until thermal equilibrium is reached, meaning that both the water and the ice cubes are at the same temperature.

2. Melting: As heat is transferred from the warm water to the ice cubes, the ice cubes will begin to melt and turn into liquid water. This process is endothermic, which means it requires energy to break the ice molecules' bonds and convert them into liquid water.

3. Temperature Equilibrium: Eventually, the temperature of the water and ice will equalize. The water will cool down, and the ice will melt completely if there is enough heat transferred from the warm water to the ice.

The net effect of adding ice cubes to warm water is that the water will cool down, and the ice will melt. This is an example of heat transfer due to the temperature difference between the warm water and the ice. The warm water loses heat, and the ice gains heat until they reach the same temperature, and the ice melts into water.