Question

Explain in terms of energy the process which takes place as a solid at its melting point changes into a liquid at the same temperature.​

Answer 1

Answer:

When ice (a solid) melts, it turns into water (a liquid); this is called fusion. ... A solid substance at its melting point has less energy than the same mass of the substance when it is a liquid at the same temperature. To change a solid into a liquid, or a liquid into a gas, requires heat energy

Explanation:

Answer 2

The process which takes place as a solid at its melting point changes into a liquid at the same temperature is fusion.

Explanation:

• The enthalpy of fusion of a substance is absorption of energy from surrounding at constant pressure.
• The energy absorbed is widely heat energy where the state of the substance changes with no temperature change.
• For example, the ice (0°C) changes from solid to water by absorbing heat under a wide range of pressure. 1 kg of ice absorbs 333.55 kJ of energy.
• The state of a material changes at freezing and melting point. The heat of fusion of the materials varies and changes state when the surrounding provides required energy.