Where did the water go? Learners conduct an experiment to see how the difference in temperature affects evaporation rates. Scholars continue to investigate evaporation by comparing water and alcohol evaporation rates. Pupils experiment with the different amounts of the two liquids that will fit on a penny.

Concepts

evaporation, water, surface tension

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Instructional Ideas

• Lead a discussion on the appearance of condensation on the inside of the bags of water
• Ask the class to brainstorm changes to the experiment to discover more about evaporation

Classroom Considerations

• Be careful and follow safety procedures when dealing with the isopropyl alcohol
• Part of Adventures in Chemistry experiments

Pros

• Provides a description of what to expect and what is happening
• Includes a hook to connect the experiment to individuals' experiences

Cons

• None