in a balanced equation, there will be the same number of atoms on the reactant side as there are on the products side. what is this an example of?​

Ithink the answer is b.

The surface of the water droplet is held together by the attraction between molecules. in order for water to flow more easily into these small spaces, you need to decrease its surface tension. you can do this by adding soap, which is a surfactant (a material that decreases the surface tension of a liquid).