Monday, September 28, 2015

Water lab

Question: What is adhesion and cohesion and why is water sticky?

Procedure: have a penny, water, and a water dropper, drop as much water as you can on the penny until the water over flows. Then for the next experiment have two beakers and a string dip the string in water and grab the beaker filled with water and put one end of the string into the string and same with the other beaker and try to pour all the water into the other beaker by trying to pour it on the string with out spilling anything and the same amount of water should be in the other beaker.

Claims: Water is very sticky 

Evidence: The picture with the pennies is of water droplets stacking on each other.

 The bottom three pictures are of the transferring water from a beaker through a string to another beaker.


Research: (I got this information from http://water.usgs.gov/edu/adhesion.html) The reason why water is so sticky is because of Adhesion and Cohesion. Adhesion is water attracted to substances and                      
Cohesion is water attracted to water. Oxygen and hydrogen are attracted to each other causing water to be in clumps when it is dropped on things.
Reflection: I didn't know water could just flow onto a string and not fall out.



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