Water is unlike any other substance on Earth.  It exists as a solid, liquid, and gas under everyday temperatures and pressures.  It is commonly referred to as “the universal solvent” because of its ability to dissolve many substances.  Its ability to hold heat makes it important as a climate regulator, and it is essential for life on planet Earth.

Your high school is participating in the state science fair, and your class will develop a series of presentations that focus on the molecular structure of water and the unique properties of water, including its importance as a solvent, its ability to hold heat, its phase changes, and its role in sustaining life.