** will give you brainliest plus 15 points for this one question ** a substance has a melting point of 80 °c. which of the following is true for the substance? a. when the substance is heated, its temperature will rise above 80 °c after 50% of the liquid has changed to vapors. b. when the substance is heated, its temperature will rise above 80 °c after 100% of the liquid has changed to vapors. c. when the substance is cooled, its temperature will fall below 80 °c after 50% of the liquid has changed to solid. d. when the substance is cooled, its temperature will fall below 80 °c after 100% of the liquid has changed to solid.