The Bubble Lab

Introduction

In the bubble lab we were comparing the difference between the bubbles with sugar, salt, and just plain soup and water.  The main questions are  What will happen to the bubbles if you add sugar to the soup and water? If you add salt? Adding sugar to the soap water will increase the bubbly lather and bubbles.  The salt makes the mixture become harder over time and more syrupy. 

Hypothesis

Before we started the lab we made an educated guess.  We guessed that the salt mixed into the dish detergent and water would make a better bubble.  Then we decided that that sugar wouldn't even make a bubble.

Materials

• 3 Plastic Drinking Cups
• Liquid Dish Detergent
• Measuring Cup
• Spoons
• Water
• Table-Sugar
• Table-Salt
• Drinking Straw

Procedures
1-Label three drinking cups 1,2, and 3.  Measure and add one teaspoon of liquid detergent to each cup.  Use the measuring cup to add one two thirds of a cup water.  Then swirl the cups to form a clear mixture.  CATION wipe up any spills immediately so that no one will slip and fall.
2-Add a half teaspoon of table sugar to cup 2 and a half teaspoon of table salt to cup 3.  Swirl each cup for one minute.
3-Dip the drinking straw into cup 1, remove it, and blow gently into the straw to make the largest bubbles you can.  Practice making bubbles until you feel you have reasonable control over you bubble production.
4-Repeat step 3 with the mixtures in cups 2 and 3.
Data/Discussion
The salt mixed in with the soup and water did not make bubbles when you removed the straw and blew.  If you kept the straw in the mixture then it would make bubbles.

This picture shows the salt mixture when you keep the straw in the liquid.

The picture below shows the salt mixture when you take out the straw and blow.

This picture shows the sugar mixture's bubble.

The sugar mixed in with the soup and water made bubbles when you removes the straw and blew and also when you left it in the mixture. The sugar made the best bubbles and the salt made no bubbles :P. 
Conclusion
Our hypothesis was completely wrong.  We thought the opposite of what happened. It turns out that the sugar blows good bubbles and the salt didn't work.   After the experiment, we questioned why does sugar work so much better than salt? Also what would happen if you added salt and sugar to the same mixture.  
This was a fun lab and we learned how sugar and salt reacts to the liquid detergent when blowing bubbles.