LAB: THE SCIENCE OF BIGGER BUBBLES
Name _____________________________
Partners’ names _____________________
__________________________________
__________________________________
Purpose: To carry out an experiment using the scientific method, collect and graph data, & analyze the
data.
Pre-lab
1. Write down YOUR hypothesis as to which solution will produce the biggest bubbles. Make
sure to include the reasoning behind your choice. Your hypothesis does NOT have to be the
same as your lab partners.
_______________________________________________________________________________
2. Safety (list two safety precautions that will be observed during this lab.)
 _______________________________________________________________
 _______________________________________________________________
3. Create Data Table on a separate sheet of paper. Data table should include individual results, group
results average and class results average.
4. Identify the independent variable and the dependent variable. ______________________
_____________________________________________________________________
Procedure
1. Obtain a sample of each of the 4 bubble solutions from the side lab tables. Be sure to label
your beakers A, B, C, D. You will only need 25 mL of each solution. Also at the lab tables you
will have pieces of aluminum wire.
Remember:
Solution A
Solution B
Solution C
Solution D
0 drops of glycerin
10 drops of glycerin
20 drops of glycerin
30 drops of glycerin
2. Shape a piece of aluminum into a bubble blower. (---O)
3. Blow a bubble so that it lands on the table top and measure its diameter in millimeters.
4. Repeat your procedure by doing 4 trials of each of the solutions A-D. Record the results in your
data table.
5. Calculate the average bubble diameter for each solution and record.
6. Graph the data above. Use the averages in the graph.
Conclusions and Questions
1. What variable was changed in this lab? What is this variable called?
2. What was responding to the variable that was changed? What is this variable called?
3. What were the constants in this experiment? Which solution is considered the control?
4. According to your data, which solution produced the biggest bubbles? Did this agree with your
hypothesis?
5. Why did the values for the bubble’s diameter differ between groups? Design this experiment by
creating a different independent variable. Is the relationship between the independent and the
dependent variable direct, indirect, linear, exponential…?)
bubble lab
intro stuff folder
bergh