Heating & Cooling Curves Unit 7: Lesson #3 Heating/Cooling Curves: Show the change of state over time that occurs with the addition or removal of heat energy What happens when you add heat to a solid? HEATING curve for water Temp Heat can be transferred even if there is no change in state 100 0 Ice at –30.0°C absorbs heat but stays SOLID while temperature rises to 0°C. Time What happens as a solid melts? HEATING curve for water Temp 100 0 At 0°C ice begins to melt