Evaporation and Boiling
Chemistry ⇒ States of Matter
Evaporation and Boiling starts at 7 and continues till grade 12.
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See sample questions for grade 7
A beaker of water is heated until bubbles form throughout the liquid. What is this process called?
A student leaves a bowl of water on a windowsill. After a few days, the water level drops. What process is responsible for this?
Describe one everyday example of evaporation.
Describe what happens to the temperature of a liquid while it is boiling.
Explain why a puddle of water disappears after a sunny day.
Explain why sweating helps to cool the body.
Explain why water in a shallow dish evaporates faster than in a deep container.
Is boiling a physical or chemical change?
Name two factors that affect the rate of evaporation.
What happens to the boiling point of water at higher altitudes?
What is evaporation?
What is the main difference between evaporation and boiling?
Why does increasing the surface area of a liquid increase the rate of evaporation?
Why does water boil at a lower temperature on a mountain than at sea level?
A sealed container of water is placed in a room at 25°C. After several days, the water level remains unchanged. Explain why evaporation does not occur in this situation.
A student notices that a wet cloth dries faster on a windy day than on a calm day. Explain the reason for this observation.
Describe how the process of evaporation is different from boiling in terms of energy and location within the liquid.
Explain why boiling water at the top of a high mountain is not suitable for cooking certain foods, such as pasta, compared to boiling water at sea level.
