NAME_____________________

Heating Curve Worksheet 

 

This graph is showing heating of water. Now observe this graph and answer the following question:

1)     What is happening to the average kinetic energy of the molecules in the sample during section 2?

 

2)     As a substance goes through section (2), what happens to the distance between the particles?

 

3)     What is the name of the process happening during section (4)?

 

4)     What is the melting point of this substance?

 

5)     Shade the region which is representing latent heat of vapourisation.

 

6)     When this substance is melting, the temperature of the ice-water mixture remains constant because:

a.     Heat is not being absorbed

b.     The ice is colder that the water

c.     Heat energy is being converted to potential energy

d.     Heat energy is being converted to kinetic energy

 

7) Write the name of the processes shown in the following diagram:

 

8) –128^oC is equal to ____________K.