Evaporation Presentation for School level study Evaporation Process, Factors of Evaporation, Evaporation

1. EVAPORATION
Presented By:RASHID ALI

2. Evaporation
• Changing of liquid into vapours (gas molecules)
• EXAMPLE
• The water in ponds evaporates in the summer
• Continous process
• Cooling effect

3. Evaporation
• Factors affecting Evaporation
• Nature of liquid
• Tempreture
• Surface area

4. Evaporation
• Nature of liquid
• Poler liquids evaporates faster
• Nonpolar liquids evaporate slower

5. Evaporation
• Temperature
• Rate of evaporation will be more at
higher temperature as high energy
molecules will evaporate faster
• Rate of evaporation will be slower at
lower temperature as enegy of
molecules is less

6. Evaporation
• Surface area
• The evaporation will be greater at larger
surface area because molecules find more
space to evaporate
• EXAMPLE
• Tea is cold earlier in saucer than in a cup
due to larger surface

7. Evaporation
• Continuous process
• Evaporation continuoues at all
temperatures as some of the molecules
have the energy to escape out
• Cooling effect
• Evaporation causes cooling because the
evaporated molecules have absorbed the
energy from surrounding environment
• As a decrease in environment temperature

8. THANK YOU!
Any Question?
https://www.youtube.com/watch?v=kmmEV4ohSDA