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Investigating Water's Surface Tension: Pre-Lab Assignment

In this pre-lab assignment, students will explore the concept of surface tension in water using the scientific method. Through hands-on experiments involving floating paper clips and the effect of soap on water’s surface tension, students will visualize molecular interactions and learn key terms such as polarity and hydrophobicity. Completing flow charts to summarize procedures and conducting research for informed answers on surface tension will deepen understanding of water’s unique properties.

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Investigating Water's Surface Tension: Pre-Lab Assignment

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  1. Laboratory # 2 The Scientific Method: Exploring Water´s Surface Tension

  2. Pre-Lab Assignment • Heading: Date Lab # 2 The Scientific Method

  3. Pre-Lab Assignment • Definitions • Molecule • Bond • Surface Tension • Polarity • Hydrophobic

  4. Pre-Lab Assignment • Procedure You need to do a total of three flow charts. Summarize the different steps in the boxes of the flow chart. Make sure to use a RULER to draw your boxes. An example is provided in the following slide.

  5. Part I: Floating Paper Clip Beaker with 400 mL of water Drop paper clip in water Use bent paper clip to place a second paper clip in water until it floats Apply drop of liquid soap using toothpick

  6. Pre-Lab Assignment Answer the following questions. Make sure you research the information in order for you answers to be more complete and for you to understand the information better. • Explain why water has a greater surface tension than other liquids. • What effect does soap have on water´s surface tension?

  7. Pre-Lab Assignment Sources You should include the sources you consulted for your definitions and the research to answer the questions.

  8. Pre-Lab Assignment

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