VAPORATION

Vaporization

• The particles of a liquid don't move at the same speed.
• When the molecule is above-average speeds it goes away from the liquid phase which is called vaporization.

Vaporization

• Vaporization occurs more often at higher temperatures.
• The opposite of vaporization is condensation.
• There are two types of vaporization: Evaporation and Boiling.

EVAPORIZATION

Evaporation

• Evaporation is a cooling process.
• Liquid particles with high energy are in the gaseous state.
• While the lower energy particles are in a liquid state.
• The intermolecular attractions affect the rate of evaporation.

Evaporation

• Strong attractions restrain particles from evaporating fast
• Weak attractions allow quick evaporation
• Dynamic equilibrium is when condensation and evaporation balance each other.

BOILING

Boiling

• Boiling is the change between a liquid and a gas state when at boiling point.
• Vapor escapes from the liquid’s surface and also bubbles form inside the liquid and rise to the surface.

Boiling

• Boiling occurs when the vapor pressure of a liquid is equal to the atmospheric pressure.
• Atmospheric pressure is usually greater than vapor pressure at room temperature.

QUESTIONS

Questions

• What are the two types of vaporization?
• Vaporization mostly occurs at high tempertures. True/False
• Intermolecular attractions affect the rate of what?
• What physical evidence forms when boiling?

ANSWERS

• Evaporation and Boiling
• True
• Evaporation
• Vapor and Bubbles