In this experiment, we are going to determine the effect of temperature on water absorption in warblettes.
To complete this experiment, you will need the following:
1. Create an ice bath by placing a mixture of water and ice in the 500 ml beaker. Fill approximately 1/2 full.
2. Using a graduated cylinder, pour 50 ml of water into one of the 250 ml beakers. Place the beaker in the ice bath. This will keep the water cold during the experiment. For the purpose of this experiment, it will not be necessary to measure the actual temperature of the water. Our main goal is to compare cold and warm temperatures in general. The water will drop to between 5 and 10 degrees celsius.
3. Using a 50 ml cylinder, add 50 ml of hot tap water to the second 250 ml beaker. The water temperature will be approximately 40 degrees C and will continually cool during the experiment.
4. Add 40 Warblettes to each of the 250 ml beakers. Allow the Warblettes to absorb water for 20 minutes.
5. Take one beaker and pour the remaining water into the graduated cylinder. Measure this amount and subtract from the original 50 ml. This calculation will give you the amount of water absorbed by the Warblettes. Repeat this step for the second beaker.
The warmer temperature water will promote faster growth of the polymer. Compare this to real life applications like:
- Coffee, tea, sugar, and other solids dissolve faster in hot water.
- Most bacteria grow best at warmer temperatures (close to human body temperature).
- Ice on a contusion reduces bruising by slowing blood flow.
Warblettes can be used in many experiments and create interest and excitement while reinforcing scientific principles.