17 Questions
What is the main factor that affects the rate of evaporation?
Surface area exposed to the atmosphere
Which of the following is a surface phenomenon?
Evaporation
What is the latent heat of fusion?
Heat energy to change solid to liquid
What is the physical state of solid carbon dioxide at room temperature?
Solid
At what temperature does water boil on the Kelvin scale?
$273$ K
What temperature is required for water to change into the vapour state?
373 K
What is the reason particles in steam have more energy than water at the same temperature?
They have absorbed extra energy from the surroundings
What does the Kelvin scale help us understand about the state of matter temperature?
How close a substance is to absolute zero temperature
Which substance changes directly from solid to gaseous state without becoming a liquid?
Solid carbon dioxide
What physical process allows solid carbon dioxide to change directly into a gas?
Sublimation
How do we convert a temperature from the Celsius scale to the Kelvin scale?
Add 273 to the given temperature
What is the significance of a decrease in humidity on the rate of evaporation?
It increases the rate of evaporation
What causes the temperature to remain constant during the change of state for any substance?
A decrease in energy
How does an increase in surface area affect the rate of evaporation?
It increases the rate of evaporation
What is the physical state of solid carbon dioxide at room temperature?
Solid
How does an increase in temperature affect the rate of evaporation?
It increases the rate of evaporation
What is the effect of wind velocity on evaporation?
Increases evaporation
Learn about the concept of latent heat of vaporisation in water. Understand how particles from the liquid gain enough energy to change into the vapour state at 373 K. Explore how the particles in steam, or water vapour, have absorbed extra energy in the form of latent heat of vaporisation.
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