Question

which state change occurs between points d and e on the heating curve? water temperature (°c) 150 125 100 boiling point 75 50 25 0 melting point -25 -50 a solid b melting c liquid d boiling e gas f time heating curve for water

Explanation:

On a heating - curve, the horizontal sections represent state - change processes where the temperature remains constant as heat is used for the phase transition. Points D and E are on the horizontal line at the boiling point of water. During this stage, water changes from the liquid state to the gas state (vaporization or boiling).

Answer:

The state change from liquid to gas (vaporization or boiling) occurs between points D and E.