Identifier:
FL: ST - 005
Concept Overview:
The presence of a surfactant, soapy water, causes the force holding water molecules next to each other decreases. This results in decreased surface tension.
Lecturer Procedure for Demonstration
| Step(s) to Follow | Expected Result |
|---|---|
Use the paper clip tool to lower a small paper clip into the water. Repeat several times.
| The paperclips will float
|
Use the eye dropper to add a few drops of soapy water near the floating paper clips.
| The paperclips will sink to the bottom of the container. |
Practice Alert: This demonstration may require practice on behalf of the lecturer to ensure success.
Tutorial:
Set-up Instructions for FL: ST - 5
Transcript:
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