Observations: The soap is thick and the penny is rough. The tap water latest longer than the soapy water Data: Drops of Tap and Soapy Water Added to a Penny Average Drops of Tap Water 35 waterDrops of Soapy I got my average from using Microsoft Excel Conclusion: I nave accepted my hypothesis because tot the results tot the data trot this lab. In my hypothesis I stated that the surface tension of the tap water is higher than that of soapy water.

My data supports this hypothesis because the average drops of tap water the penny could hold was 25. 5 while the average drops of soapy water was 17. 3 drops. This shows that soapy water has a lower surface tension, thus making it not able to hold as many drops of soapy water could on the penny. I noticed in my data that in trials 3 and 4 that the penny held more drops of soapy water than tap water. This was not in accord with my hypothesis, and I think it may have been due to a weakness in the experiment. When I used the pipette to suction water and then drop it onto the penny may not have been doing it exactly the same way each time.

All in all, my experiment conducted that my hypothesis was correct Application This relates back to the way soapy water and tap water act in everyday situations. The soap causes the surface tension to be less than that of water so if you poured soapy water onto a kitchen counter the solution would disperse as broadly as it could over the entire counter. Tap water on the other hand when spilled on a counter will naturally try to come together in water colonies. The molecule sin the tap water will move towards each other and stack on top of each other thus leaving some parts of the counter dry and some parts with canals of water.


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