Compare the potential energy of water molecules as water changes from a solid to a liquid

At the melting point, the solid  form of water changes to liquid form. This happens at fixed temperature. During the phase change, the bonds between the molecules break and weakens. This reduces the binding potential energy.  There is no change in the translational kinetic energy which is reflected by the temperature being constant during the phase change. The binding potential energy which reduces is actually utilized in breaking of the molecular bonds which eventually causes the phase change.

The average kinetic energy of a substance is directly proportional to the temperature of that substance.

Here T is the temperature.

During the process of change of state,the temperature of the system remains constant as long one substance is not converted into another substance. It means that the energy absorbed or released at that time is utilised in changing the state of substance only. As kinetic energy is constant,so gain or loss of energy is attributed to potential energy.

In the given question,the water is converted from solid to liquid. During the melting of ice, heat is given to the ice for converting into liquid. The energy given is called latent heat which is nothing else than the gain of potential energy of water.

Hence water in liquid form has more potential energy than solid ice.

pretty sure it's false

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