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Essay On Antibacterial Soap

1241 Words5 Pages

Research Question: What is the size of the bacteria, after washing your hands with different types of soap? (E.g. antibacterial and perfume soap) Hypothesis: In this experiment, I will touch one certain object and then use 2 or 3 different types of soaps and test the bacteria growth of each one. I believe that the one without being washed will generate the largest size of bacteria; while the antibacterial soap will have the smallest. Since the main purpose of antibacterial sap is to kill off bacteria; the perfume soap which those clean hands but also leaves a nice scent will have a moderate amount, in between the amount the unwashed section and the antibacterial soap will generate. Method: 1. Collect all materials necessary to perform the experiment. 2. With the petri dishes available …show more content…

Touch the (unhygienic) object* that will be used to test for bacteria, go back to the lab and touch 1 section of the petri dish (while the dish is held upside down), which will be observed for bacteria growth of an unwashed hand. 5. Take one of the soaps (e.g. the antibacterial soap) and wash hands for approximately, 10 seconds. After it air dries for 30 seconds, touch the second section of the petri dish. 6. Afterwards, touch the object once more and then wash hands with another type of soap (e.g. perfume soap); following the same washing routine as the 1st one, touch another section of the petri dish. 7. Also, one of the sections on the petri dishes has to stay blank, to use as validity in the experiment. 8. Once everything had been down, quickly close the petri dish while it is still upside down, tape it shut and label it to remember which belongs to you. 9. This whole process will be done again for the second petri, instead of 10 seconds of washing; 5 seconds of washing will be done. 10. Then tape the second petri dish shut and label it, also indicating it is the one with 5 seconds hand washing. 11. Afterwards, collect observations every time that it can be

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