Heat Graph

Question 1

First Line up (AB)

Answer 1

1. Heating of a sold
2. Temp Increases
3. KE Increases

Question 2

First Flat Line (BC)

Answer 2

1. Melting of sold (fusion) - turning into liquid
2. Temp stays constant
3. PE Increases

Question 3

Second Line up (CD)

Answer 3

1. Heating of a liquid
2. Temp increases till boiling pt
3. KE Increases

Question 4

Second Flat Line (DE)

Answer 4

1. Boiling of Liquid (Vaporization) - Liquid to gas
2. Temp is constant
3. PE and KE remains constant

Question 5

Third Line up (EF)

Answer 5

1. Heating of gas
2. Temp increases
3. KE increases