Thursday, October 14, 2010

bubbles

BUBBLE LAB 
INTRODUCTION: We know from experience that detergent makes light small bubbles while sugar makes large bubbles  We know this from chewing gum.
Will water with dish detergent make bigger bubbles with salt or sugar?
Solution: Test all  three solutions (sugar, salt, and detergent mixtures)
PROCEDURES:
1.  Label 3 cups 1,2,3 then add 1 teaspoon of dish detergent to cup 1, then 2/3 cup of water to all cups, then stir.
2. Then add a half teaspoon of sugar to cup 2 and a half teaspoon of salt to cup 3, stir for one minute.
3. Dip straw into cup 1, remove, blow gently into straw and make a bubble
4. After you blow bubble 1 repeat step 3 for salt and sugar cups.
5. Conclude and record which mixtures made the biggest bubbles and how they reacted
HYPOTHESIS: The sugar will make bigger bubbles and the detergent will make small weak bubbles. Salt bubbles may be heavy and be medium  sized.
MATERIALS: 3 styrafoam cups, water, salt, sugar, straws, measuring tools, and a good attitude!!!!!!!!!!





DATA:
Observations: The sugar bubble grew larger bubbles compared to the salt bubbles which may be a reason that THE GUM FACTORIES USE LOTS OF SUGAR IN BUBBLE GUM!
John Doe blows into a cup
the salt bubbles were heavy and they did not pop upon impact to the floor while the sugar bubbles were light and popped when they touched any object.
DISCUSSION: During the expirement we learned many things first we learned that the differnece in salt and sugar mixtures varies the weight of the bubble by offsetting the size of the bubble, the weight of the bubble, the size the bubble could achieve, and the texture of the bubble once it was blown.
The bubble lab elaborated upon our breif knowledge of how mixtures (variables) can differ in outcome. (for example) the pyrotechnic clean up crew respondes to a black powder spill, it mixes the cleaning agents in wrong amounts which results in too much water and not enough removing agent so a powder residue is left on the floor of the factory and a forklift idles over it creating heat and the powder ignites burning down the factory.
EXPERIMENTAL ERRORS:  Using water that is different temperatures in each of the cups; putting more than 1\2 teaspoon of any of the mixtures in each cup;  putting too much or too little water in the cups; not stirring the liquids until they dissolve.
CONCLUSION: Our hypothesis was half right.  The sugar bubbles did as we expected while the salt made heavy tough bubbles. The detergent made medium bubbles that lasted for a little while and floated good.
QUESTIONS: Does air temperature affect bubble flight? Does elevation have an affect on bubbles?