Concept:Melting of ice requires heat energy to overcome the forces holding its molecules together.
Explanation:In the flask, ice and water are in contact with each other.
Heat energy from the surroundings is absorbed by the ice.
This absorbed energy weakens the bonds between the ice molecules.
The ice then changes from solid to liquid water.
Because energy is gained during this change, the process is endothermic.
Therefore, energy is absorbed when ice changes to water.
Answer:B. Energy is absorbed when the ice changes to water.
