Diffusion: Temperature and Cold Water

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The Rate of Diffusion in Different Temperatures

Purpose: To see if the temperature of a solution will change the rate blue diffuses in it. This will be tested by timing how long it takes dye to diffuse in warm water, cold water, and room temperature water. Hypothesis: I think that the dye will diffuse at a faster rate in the warm water than in the cold water. I believe that the room temperature water will have the dye diffuse faster than the cold water but slower than the warm water. Variable:

Dependent:
* Temperature
* Dye
*
Independent:
* Colour
* Rate of diffusion
Controls: In this experiment the control is solution B with the room temperature water. Procedure:
Step 1:Get 3 clear plastic finger bowls
Step 2:Label the bowls with tape and with permanent black marker label them A,B, and C. Step 3:Boil 1 cup of water in a pan on the stove on medium heat (5-7) until it reaches a rolling boil. Step 4:Put a cup of room temperature water in a freezer that is 90 degrees Celsius for 30 minutes. Step 5:Put a cup of water from the tap on the counter for 10 minutes. Step 6:Using a thermometer check each of the temperatures of the 3 water solutions. Make sure the boiled water is __,the cold water is __,and the room temperature water is__. Procedure continued

Step 7:Put the warm solution in the finger bowl labeled A,the cold solution in the fingerbowl labeled C and the room temperature solution in the bowl labelled B.
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