Simple Kinetic Model of Matter 2 - Y10C

Front

What is evaporation?

Back

Evaporation is the process by which particles from the surface of a liquid gain enough energy to escape into the gas phase.

Front

At what temperatures does evaporation occur?

Back

Evaporation occurs even at temperatures below the boiling point.

Front

What factors increase the rate of evaporation?

Back

1. Increase Temperature 2. Increase Surface Area 3. Reduce Humidity 4. Air Movement

Front

How does increasing temperature affect evaporation?

Back

When a liquid is warmer, more particles have sufficient energy to escape.

Front

Why do wet clothes dry faster on a hot day?

Back

Water molecules on the fabric surface absorb heat energy and escape more easily.

Front

How does increasing surface area affect evaporation?

Back

Spreading a liquid increases the number of particles exposed to air, allowing for faster evaporation.

Front

How does humidity affect evaporation?

Back

In a humid environment, air contains many water molecules, slowing down evaporation.

Front

What role does air movement play in evaporation?

Back

Wind or blowing air helps carry water molecules away from the liquid’s surface, increasing the rate of evaporation.

Front

What is the difference between boiling and evaporation?

Back

Boiling occurs throughout the liquid at the boiling point, while evaporation occurs only at the surface and can happen at any temperature.

Front

What is the cooling effect of evaporation?

Back

When high-energy particles leave the liquid, the average energy of the remaining particles decreases, lowering the temperature.