The solubility of a solute (a dissolved substance) in a solvent (the dissolving medium) is the most important chemical principle. a. True
b. False

False

Explanation:

The most important chemical principle is not just one, there are several, such as the constitution of an atamo among others.

The important thing about this principle is that solutes can be dissolved in solvents where as a product they give a solution.

According to the amount of solute, three types of solutions can be observed:

Supersaturated solutions, where the solute is in excess and part cannot be integrated into the solvent, precipitating in the lower part of the container.

Saturated solutions, where the solute is in the right concentration so that it does not precipitate and constantly interacts in a cyclical way with the solvent.

Subsaturated solutions, where the amount of the solute is small.

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.