2.2 Properties of Water

Cohesion

the attraction between molecules of the same substance.

Explain the specific properties of water that contribute to Earth's suitability as an environment for life.

Polarity, Hydrogen bonding, Adhesive, Cohesion, and the ability to moderate temperature and expanding upon freezing and as a solvent.

Adhesion

The attraction of molecules of different substances.

Polarity

Because of the angles of its chemical bonds, the oxygen atom is on one end of the molecules and the hydrogen atoms are on the other.

Hydrogen bonding

Because of their partial positive and negative charges, polar molecules such as water can attract each other.

Why is it important for cells to buffer solutions against rapid changes in pH?

Buffers dissolve in life's fluids play an important role in maintaining homeostasis in organisms.

pH

The considerations of ions in a solutions.

How does the structure of water contribute to its unique properties?

Water is a polar molecule, it is able to form multiple hydrogen bonds, which account for many of water's special properties.

Versatility as a solvent

Water is a solvent, the substance In which the solute dissolves.

Ability to moderate temperature:

Water's heat capacity, the amount of heat energy required to increase temperature, is high.