Name:__________________________ Date:_____ Period:___
Mr. DeRycke & Ms. Price – Science 7
You will be doing a lab activity to study the effect of particle size on
the rate of disolving Alka Seltzer. This will model the process of
chemical digestion in your body.
HYPOTHESIS: I think that
Alka Seltzer tablets
MATERIALS & METHODS: Explain the steps you followed,
and how you used the equipment and materials.
Mortar & Pestle
quartered
crushed
halfed
whole
Plastic Cup
Stopwatch
Data Chart
Graph
RESULTS of Alka Seltzer Lab Tests:
Record the times from your group's Alka Seltzer tests in the chart
below. Then share your data with the other 3 lab groups, and get
their data recorded in your chart.
Graphing Your Data:
On the next page you will construct a bar graph of your “Class
Average Time” data.
You will also create a title that accurately explains the graph.
Rate of Disolving
(seconds)
GRAPH TITLE:_______________________________________
Whole
Tablet
Halfed
Tablet
Quartered
Tablet
Crushed
Tablet
Surface Area Of Alka Seltzer Tablet
CONCLUSION: Here you dicuss your results. What did you find out?
Did you prove your hypothesis right or wrong? ______ What does that tell you
about digestion?