Melting and Boiling

Question 0

2) When particles in a solid vibrate quickly enough to overcome their attraction, what happens?

Answer 0

The particles move around (melting)

Question 1

1) When particles in a liquid have enough energy to overcome their attraction to each other, what happens?

Answer 1

Big bubbles of gas form in the the liquid (boiling)

Question 2

3) When a substance is melting or boiling energy is needed to…?

Answer 2

Break the intermolecular bonds in the substance rather than raise its temperature

Question 3

4) When a substance is condensing or freezing, what is happening?

Answer 3

Bonds are forming between particles which release energy

Question 4

5) Until a substance turns into a liquid (condensing) or a solid (freezing) the temperature…?

Answer 4

Doesn’t go down

Question 5

6) What is specific latent heat of melting?

Answer 5

The amount of energy needed to melt 1Kg of a material without changing its temperature

Question 6

7) What is the specific latent heat of boiling?

Answer 6

The amount of the energy needed to boil 1Kg of material without changing its temperature

Question 7

8) What is the formula for specific latent heat?

Answer 7

Energy = Mass x Specific latent heat

Question 8

9) What are the four processes that occur as a result of heating or cooling different materials?

Answer 8

• Melting
• Boiling
• Freezing
• Condensing