1.On a piece of paper, grind up one tablet with the back of the spoon until it is a fine powder.

2.On a second piece of paper, chop one tablet into several small pieces but do not grind it.

3.Fill the three cups with the same amount of water

Note: the water should be approximately the same temperature at the start.

4.Simultaneously (again, get help), add the ground tablet to one cup, the chopped tablet to a second cup, and the whole tablet to the third cup. Begin timing with your watch.

5.Record the amount of time needed for each reaction to reach conclusion (to stop fizzing).

6.Graph your results.

Note: On the Y axis = time of reaction; on X axis where you are putting "surface area exposed" use 1 = for whole tablets; 5 for small pieces; 10 for crushed.

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