The purpose of this lab is to test the hypothesis that bubble-making can be affected by adding table sugar or table salt to a bubble blowing mixture.
Materials-
1. Three plastic cups
2. Liquid dish detergent
3. Measuring cup and spoons
4. Water
5. Table sugar
6. Table salt
7. Drinking straws
Procedure-
1. Label three drinking cups one, two, and three. Measure and add one teaspoon of liquid dish detergent to each cup. Use the measuring cup to add two thirds of a cup of water to each drinking cup. Then, swirl the cups to form a clear mixture.
(Wipe up any spills immediately so that no one will slip and fall.)
2. Add a half teaspoon of table sugar to cup two, and a half teaspoon of table salt to cup 3. Swirl each cup for one minute.
3. Dip the drinking straw into cup one, remove it, and blow gently into the straw to make the largest bubble you can. Practice making bubbles until you can reasonably control your bubble production.
4. Repeat step 3 with mixtures in cups two and three.
Hypothesis:
The mixture with the salt won't do as well, and the mixture with the sugar will be more durable.
Analyzation and Conclusion:
The sugar mixture had bigger bubbles that were harder to pop. The control mixture made average bubbles that were well-sized, but weaker. The salt mixture could hardly produce bubbles at all. We probably should have measured the soap and water more precisely.
