The energy required to change a solid to liquid at constant temperature is called
Answer Details
The energy required to change a solid to a liquid at constant temperature is called the "latent heat of fusion."
When a solid is heated to its melting point, it absorbs energy in the form of heat. However, this heat does not result in an increase in the temperature of the solid; instead, it is used to break the bonds holding the molecules of the solid together. As a result, the solid begins to melt, and the temperature remains constant until all of the solid has turned into liquid.
The amount of energy required to break these bonds and turn a solid into a liquid is called the latent heat of fusion. This energy is needed because the bonds between molecules in a solid are much stronger than the bonds between molecules in a liquid. Therefore, it requires a lot of energy to overcome these bonds and change the state of matter from solid to liquid, even though the temperature remains constant.