When you melt butter in a pan is it physical change that releasing energy?

When butter is melted in a pan, it undergoes a physical change. This means that the chemical composition of the butter does not change, but its physical properties, such as its texture and shape, do.

When butter is heated, the kinetic energy of the molecules increases, causing them to move faster and break apart from each other. This results in the butter melting from a solid to a liquid. The energy required to melt the butter comes from the heat source, such as the stove or microwave.

The melting of butter is an endothermic process, which means that it absorbs energy from the surroundings. This energy is used to break the bonds between the butter molecules and convert them from a solid to a liquid.

The opposite process, freezing, is an exothermic process, which means that it releases energy to the surroundings. This energy is released when the butter molecules slow down and come together to form a solid.

In summary, when butter is melted in a pan, it undergoes a physical change that absorbs energy from the surroundings.