Alka-Seltzer: Stirring and Shaking

By Ted Kardasis and

Michael Bazer

The Variable Manipulated

• Variable Manipulated: How much faster the tablet dissolved if we either shook or stirred it

• Hypothesis: If shaken/stirred, the time will decrease substantially

Data Table

Trials Stirring (s) Shaking (s)

1 47.5 48.3

2 45.3 40.8

3 41.7 44.7

4 40.5 47.3

Standard Dev. 3.23 3.35

Mean 43.8 45.4

Graphical Analysis: Stirring

Graphical Analysis: Shaking

Discussion

• The data supports the initial hypothesis overall because according to the data table the time decreases substantially compared to the initial test

• Difficulties: human and physical error• For a future experiment, we would try to be

more accurate as far as timing and measurement