Friday, November 4, 2011

Disinfectant comparison wrap up

Students did their last observations of their petri dishes. Students needed to answer the 5 questions on the sheet plus6. List three errors that could have occurred and 7.Was your hypothesis correct or not and explain what did happen and why.
Extra Credit due Monday: Go to a store and look at soap products that claim to be "antibacterial' soaps. How do their ingredients differ from other soaps? Design an experiment to test how well these products control the growth of bacteria. You DO NOT need to carry out the experiment.