Surface tension
Edited BY: Dana peleg
Edit Date: 2017-01-02 19:25:17

What is the relatoin between the surface-tension of a liquid and the patterns of motion upon it under the influence of detergent substances?

Watch the video and follow the instructions below.


1) Choose four liquids of your liking with different degrees of surface tension. (water is strongly reccomended)

*Make sure you use an identical amount of each (use a measuring cup).

2) Scatter black pepper on top.

3) Dip a Q-tip/finger in simple, dishwashin soap.

4) Dip the coated Q-tip/finger within the liquid.

What happenes?   

5) Use a ruler to measure the the Diameter formed.

6) Write down the results. 

Question Created By: Dana peleg
Creation Date: 2017-01-02 17:02:47
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