Here is a graph of the number of oxygen bubbles released per minute for at least 5 minutes:
Time (minutes) Number of bubbles
0 0
1 20
2 31
3 32
4 31
5 32
Please note that this graph is a representation of the data provided for Experiment 2 in Investigation 2.
Check-In
Making a graph is a good way to show data visually.
Make a graph of the number of oxygen bubbles that are released per minute for at least 5 minutes. Plot the time in minutes on the horizontal axis and the number of bubbles you counted each minute on the vertical axis.
If you were not able to collect the materials for this investigation, you may use the charts below to complete your lab report. These charts do not indicate expected results for the investigations.
Investigation 1
Experiment 1
Contents of Test Tube Original Color Observed Color After 24 Hours
Test Tube 1: BTB solution, blown into using a straw Yellow Yellow
Test Tube 2: BTB solution, blown into using a straw, and Elodea Sprigs. Yellow Blue
Test Tube 3: BTB solution, blown into using a straw, Elodea Sprigs and covered in foil. Yellow Yellow
The above data is based on three trials. One being the control with only BTB solution that has been blown into with a straw. Another containing the BTB that has been blown into with a straw, and Elodea. The last containing the BTB that has been blown into with a straw, the Elodea, and covered in foil to block the light.
Investigation 2
Experiment 2
Time Elapsed Test Tube 1 (In the Light) - Number of Bubbles Test Tube 2 (In the Dark) - Number of Bubbles
0 minutes 0 0
1 minute 20 1
2 minutes 31 0
3 minutes 32 0
4 minutes 31 2
5 minutes 32 1
The above data is based on two test tubes containing the same contents. Test tube one is in the light and test tube 2 is in the dark.
1 answer