CLINICAL MEDICINE

Detailed explanation-1: -Pepper is hydrophobic or doesn’t dissolve or mix into water. Since water molecules are strongly attracted to each other, or have a high surface tension, it keeps the pepper afloat. Adding soap breaks down the surface tension and as the water molecules spread out away from the soap, they brings the pepper with them.

Detailed explanation-2: -The pepper is able to float on the surface because water molecules like to cling to one another. They arrange themselves in a way that creates surface tension on the top of the water. This tension keeps the pepper flakes floating on top instead of sinking to the bottom of the bowl.

Detailed explanation-3: -Soap is able to break down the surface tension of water-that’s part of what makes soap a good cleaner. As the soap moves into the water, and the surface tension changes, the pepper no longer floats on top.