Multiple choice The melting point of an object is the temperature at which a substance changes from a solid to a liquid the temperature at which a substance changes from a liquid to a solid the temperature at which a substance changes from a gas to plasma the temperature at which a substance changes from a plasma to a solid Reveal answer Fill a bubble to check yourself A Correct answer Explanation The melting point is defined as the specific temperature at which a substance transitions from a solid state to a liquid state.