The hypothesis is that there will be no difference between antibacterial hand soaps and non-antibacterial hand soaps on killing bacteria.

You will isolate and grow three different bacterial cultures, mix them in sterile salt water, swab the agar plates, measure 10 micro liters of soap onto test disks, dispense the soap discs on the surface of the inoculated plate, incubate the plates, and measure the diameter of the death zone of the bacteria.

You will need 3 swabs, 6 pipettes, 3 agar plates, 1 caliper ruler, 3 antibacterial hand soaps, 3 non-antibacterial hand soaps, 9 test tubes, 18 soap discs, 10 milliliters of soap, and 1 incubator.

After the experiment, it was found that there was no difference between the antibacterial and non-antibacterial hand soaps in terms of killing bacteria. The death zone diameter of the bacteria was the same for both types of soap.

This science project is interesting because it tests a common belief that antibacterial soaps are more effective at killing bacteria than regular soaps.

Variations to consider include testing different types of bacteria and testing different concentrations of soap.