LIST THE CHANGES IN.MATERIALS BROUGHT ABOUT BY HEAT. WRITE THE IMPORTANCE OF THESE CHANGES IN MATERIALS GIVE ATLEAST 5 EXAMPLES. THE FIRST 1 IS ALREADY DONE

Answer:
Heating Chocolate - Can be dip for ice creams and can make a cake out of it
Freezing Water - Can make ice that can cool you of and can sell it to others
Burning leaves - Can help the fire spread (example : while camping)
Explanation:
Sorry i can only give that
but i hope it will help :D