If a scientist is studying the attraction of water molecules to each other, what

The scientist is studying cohesion, a property of water that makes water molecules attract to one another.

Cohesion

Explanation:

Cohesion refers to one of the properties of water molecules to get attracted to each other. Since each water molecule an oxygen atom with a partial negative charge and hydrogen atoms with a partial positive charge, water molecules form intermolecular hydrogen bonds. This leads to the tendency of water molecules to stick together, that is, cohesion.

Atoms are made up of three fundamental particles: protons, electrons and neutrons. The nucleus (center) of the atom contains both protons (positively charged) and neutrons (no charge). The ultraperipheral regions of the atom are called electron shells and contain electrons (negatively charged).