Is melting butter a physical change?

A physical change is a change in the form or appearance of matter without a change in its chemical composition. Melting butter is a physical change because the chemical composition of the butter does not change when it melts. The butter is still composed of the same molecules, just in a different form.

When you melt butter, you are simply adding energy to the butter molecules. This energy causes the molecules to move more quickly and break away from each other, causing the butter to change from a solid to a liquid.

When you cool the melted butter, the molecules will slow down and come back together, causing the butter to solidify again. This shows that melting butter is a reversible physical change.