Lab 1Bubbles!

Objective - To test how bubbles are affected by sugar or salt.

Experiment -

Swirl each test tube.Dip the straw into test tube 1, remove and gently blow a

bubble, practice to make large bubbles.Repeat with test tubes 2 and 3. Record data about the

size of the bubbles from each test tube

1 2 3

10 mL of water10 drops of soap solution

2 grams of sugar

2 grams of salt

Test Tube Approximate size of bubbles formed

1

2

3

Analysis -

1. Were there any noticeable differences in bubble formation between test tube 1 and 2?

2. Were there any noticeable differences in bubble formation between test tube 1 and 3?

Results -

Questions -

1. Which of the three test tubes was the control?

2. What were the independent and dependent variable(s) in this lab?

3. This experiment tested how salt and sugar affected bubble making. Develop a different question related to making bubbles. Form a hypothesis and design an experiment to test your hypothesis.