Term 4- Vapour Pressure

Question 1

Vapour Pressure _____ with temperature

Answer 1

Vapour Pressure INCREASES with temperature

Question 2

At certain temperatures, the vapour pressure of liquids is equal to the atmospheric pressure, meaning………….

Answer 2

That gas can form below the surface of the liquid. At a lower temperature, the atmospheric pressure would be greater and consense the gas bubble back into a liquid

Question 3

Vapour Pressure increase with temperature because

Answer 3

1. The average kinetic energy of the molecule in the liquid state increases
2. There are more molecules with enough kinetic energy to become gases, so evaporation is faster
3. There must be enough water vapour present before condensation can occur.