1. 2-2 Properties of Water
Q: How does the structure of water contribute to its unique properties? A: Because water is a polar molecule, it is able to form multiple hydrogen bonds, which account for many of water’s special properties.

2. The Water Molecule
Polarity-uneven distribution of electrons
Hydrogen Bond-attract each other
Cohesion-attraction of molecules of the same substance
Adhesion-attraction of molecules of the different substances.
Heat Capacity-energy needed to raise temp. is high

3. Solutions and Suspensions
Q: How does water’s polarity influence its properties as a solvent? A: Water’s polarity gives it the ability to dissolve both ionic compounds and other polar molecules.

4. Mixture-2 or more elements/compounds mixed together.
Solutions
Solution-all parts evenly distributed
Solvent-what it is dissolved in.
Solute-what is dissolved.
Suspensions-mixture of water and nondissolved materials

5. Acids, Bases, and pH
Q: Why is it important for cells to buffer solutions against rapid changes in pH? A: Buffers dissolved in life’s fluids play an important role in maintaining homeostasis in organisms.

6. The pH Scale-meas. Of H+ and OH- ions
More OH-
The pH Scale-meas. Of H+ and OH- ions
Water is neutral 7
More H+

7. Acids-below 7
Bases-above 7
Buffers-weak A or B that react with strong A/B to prevent sudden changes in pH scale

8. Read page 19
Answer questions #1-11