Practice Evaporation (5.2) - Elements, Compounds and Mixtures

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10 questions

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6 sample questions

Question 1.
What is evaporation?
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Think about puddles drying up on a sunny day.
Question 2.
Name one everyday example of evaporation.
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Consider something that happens with water in the air.
3Question 3.
What is the main purpose of evaporation in a laboratory?
- To change the temperature
- To separate a solid from a solution
- To dilute the solution
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Consider what happens when you heat a mixture.
4Question 4.
True or False: Evaporation occurs only at boiling point.
- True
- False
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Think about puddles that dry on a warm day.
Question 5.
A scientist heats a saltwater solution, allowing for evaporation. After the process, she observes only salt left. Explain the science behind this observation.
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Consider what happens to water and salt when heated.
Question 6.
You have two containers with the same amount of water, one with a wide opening and another with a narrow neck. Predict which will evaporate faster and why.
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Remember how surface area affects evaporation rates.

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