Aspirin (acetylsalicylic acid) is probably the most used and abused non-prescription drug. Using aspirin tablets brought from home, students analyze and compare them with the Brand "X" aspirin included in this Lab-Aid. They determine the percentage of aspirin andfiller components in a tablet, check pH and calculate the per aspirin cost. Students draw conclusions concerning which aspirins are better, which are safer, and which do nothing at all. This kit makes science more interesting because it brings "real world" questions into the classroom. Extension activities are possible with this kit. Note: Teacher and/or students must supply additional various brands of aspirin.
Scientific Concepts:
Relate science to the real world
Calculate the percent binder in tablets as well as its composition
Determine pH of tablet solution
Calculate the unit cost as well as cost-benefits
Content List:
1Teacher„¢s Guide with MSDS
30Student Worksheets and Guides
30Student Data Sheets
1Lugol's Solution, bottle
1Å“Brand X aspirin, bottle
1Dropper
5Labeled Sample stock bottles
30Test tubes
1Vial of blue litmus paper
1Vial of universal indicator paper
2Drop control bottles of Benedict„¢s solution
2Drop control bottles of Iron Nitrate solution
2Drop control bottles of Sodium Carbonate solution
Classroom Planning:
To complete this kit requires one ~50-minute class periods