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Observation

The results show that the bubbles in the tank filled with carbon dioxide remain afloat for longer period of time, compared to the bubbles in the tank filled with regular air.


Tank content

Time for the bubbles to drop (Seconds)

Average (seconds)

1

2

3

4

5

Carbon dioxide

35

38

34

35

33

35

Air

15

12

13

14

16

14
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Complexity level:
4
Project cost ($):
30
Time required:
1 hour to prepare, 1 hour for experiment
Material availability:
Easily found. May be purchased at a supermarket/department store.
Safety concerns:

Handle the glass tanks carefully.