Diffusion and osmosis
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Title: Diffusion and osmosis

Essay Details:

Subject: Science
Author: Maryellen S
Date: April 3, 2013
Level: University
Grade: A
Length: 7 / 1936

Essay text:

The cotton wool (with the ammonium hydroxide) was then placed in to a diffusion tube containing around 10 pieces of curled red litmus paper lined up from one end of the diffusion tube to the other. I had observed the diffusion tube carefully when approximately a minute later I noticed the first litmus paper had changed colour from pink to blue. About five minutes later the second red litmus paper in line had also changed from pink to blue. Two days later the entire tube had changed colour from pink to blue, thus proving that diffusion had occurred. 4. Using my knowledge of diffusion I can easily state that the change of colour the red litmus paper had (from pink to blue) occurred through the act of diffusion...

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