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Cool Down, It's Just Water!

Problem: What happens to the temperature of warm and cold water when left at room temperature?

Hypothesis: ____________________________________________________________.

Materials: 3 thermometers, 3 string rods, heating element, ice, paper towels, 3- beakers, 300 ml's of water, stopwatch, graph paper.

Procedures:

1. Fill 1 beaker with ice and 100 ml of water. Add 100 ml of water to another beaker.
2. Heat 100 ml of water in the third beaker until it's 70� C.
3. Remove ice from the second beaker and put a thermometer in each of the three beakers. Record the temperatures of all three beakers of water (Below).
4. Predict in the hypothesis what will happen to all the beakers over a 15 minute period.
5. At one minute intervals record the temperatures of all of the beakers. Stir all beakers between each reading. Continue this for 15 minutes.
6. Use a different colored pencil for each line of the graph that you are about to make.

Data:

 Time Cold Water Temp. Warm Water Temp. Room Temp. Water