Noel Richards, Katie Roland, Brittainy Tidwell

Question and Hypothesis -What is the effectiveness of washing your hands with water, regular soap, and biosoap to wash off oil, dirt, pen and sharpie? -Hypothesis- We believed that the water will be the least effective, then the biosoap and then the regular soap will be the most effective because it is more specifically manufactured. The dirt will be the easiest to wash off, then the pen and mayo and sharpie will be hard because mayo leaves a residue and sharpie is permanent inc.

Methods and Materials Materials -tap water -regular soap -biosoap -mayonnaise -dirt -ballpoint pen - sharpie Methods -make a stripe of dirt on the palm and place hand under water for 10 seconds and rub side to side three times then remove from water and then repeat the process with pen oil and then sharpie -repeat step one but add a pea size drop of soap and rub ten times before continuing - repeat step two except with biosoap

Dirt Water- washed of easily Soap-washed off easily Biosoap- washed off easily

Pen Water- left streak Soap- left faint streak Biosoap- washed of completely

Mayonnaise Water- left greasy residue Soap- smaller greasy residue Biosoap- left little to no residue

Sharpie Water- left stripe as big as original mark Soap-light and small amounts of ink left on skin Biosoap-left stripe only slightly lighter but not by much

Conclusion -Biosoap was the most effective method of removing substances. -The water was least effective, but all were significantly helpful. - The pen and Sharpie hardest to remove. The Mayonnaise left an oily residue. The dirt came off every time. - We can check chemical composition and check for unmatched chemicals. There could be something in Biosoap that makes it a better substance remover