Materials:
Liquid dish detergent
Measuring cup and spoons
Water
Table sugar
Table salt
Drinking straw
Procedure:
1. Label three drinking cups 1,2, and 3. Measure and add one teaspoon of liquid dish detergent to each cup. Use the measuring cup to add 2/3 of a cup of water to each drinking cup. Then swirl the cups to form a clear mixture.
2. Add half a teaspoon of table sugar to cup 2 and half a teaspoon of table salt to cup 3. Swirl each cup for each minute.
3. Dip the drinking straw into cup 1, remove it, and blow gently into the straw to make the largest bubble you can. Practice making bubbles until you feel you have reasonable control over your bubble production.
4. Repeat step three with the mixtures in cups 2 and 3.
Caution: Wipe any spills immediately to people can't slip and fall.
Hypothesis:
Cup 1 will blow normal, smaller bubbles because it has just the liquid dish detergent.
Cup 2 will be stronger, thus bigger because it has the sugar mixture.
Cup 3 will be stronger as well because salt is mixed in with the detergent.
Conclusion/Results:
It was easier to blow bubbles with the mixture in cup 2 because those bubbles held stronger; however, when it hit something it popped just as easy as the bubbles in cup 1. But, compared to cup 1, the mixture in cup 3 made it more difficult to blow a bubble.
Sugar was a good substance to mix with the liquid dish detergent and produced large and strong bubbles.
Salt didn't mix well with liquid dish detergent, it was much harder to blow bubbles and make them big.
If we were to go further with this experiment we would change the substances we put in the cups and see what worked the best with the liquid dish detergent. Such as, flour in cup 4, brown sugar in cup 5 and pepper in cup 6. We would then compare these mixtures with the cups we previously tested.
Our bubble beast!
Iridescent Bubble
