Melting and Boiling
 

Melting and Boiling problem 4


A solid material is supplied with heat at a constant rate. It changes from solid to liquid then to gas. The graph below shows how it temperature changes with time.




Which part of the graph shows a change of state taking place?


  • P and R


  • P and S


  • Q and R


  • Q and S



 

main author and content editor: Noble Menedi Firima