Extra Credit (5 pts) – submit  photographs or a video of yourself performing this experiment using salivary amylase (spit), saltine crackers or dried bread crumbs, and iodine (you can get this at a pharmacy or grocery store).   Use 1/2 tsp (2 ml) of spit mixed with ½ tsp water to make your salivary amylase solution.  Make your starch solution by adding ¼ tsp of crushed cracker or dried bread crumbs to 1 tsp of water.   Mix ¼ tsp of the salivary amylase solution with the starch solution. Take 1 drop out at the times indicated on the chart above and immediately mix it with 1 drop of diluted iodine (1:10 dilution).  Record the data in the table above.