Topic 1.1 Structure of Water and Hydrogen Bonding

Topic 1.1 Structure of Water and Hydrogen Bonding

As you read, complete the following objectives in your notebook.

EQ: How do the properties of water contribute to life on Earth?

From Chapter 2.3, page 30

1. Define Hydrogen Bond.
2. List 2 common electronegative atoms that often form hydrogen bonds. 

From Chapter 2.5, pages 32-40

3. Draw a water molecule, labelling the atoms and the charges. 
4. Explain what makes water a polar molecule.
5. Create a full page chart that summarizes the 4 emergent properties of water. Be sure to include the following components: 
1. Cohesive behavior: cohesion, adhesion, and surface tension
2. Ability to moderate temperature: definition of calorie. specific heat.  heat of vaporization. evaporative cooling. 
3. Expansion upon freezing: ability of ice to float. importance to life
4. Versatility as a solvent: definition of solution, solvent, solute. example of a hydration shell. Hydrophobic vs hydrophilic substances.
6. Describe how the properties of water contribute to the upward movement of water in a tree.
7. Draw a pH scale with some common examples.
8. Explain the importance of buffers to living things.
9. Describe an example of a buffer found in humans. 
10. Predict how the properties of water would change if oxygen and hydrogen had equal electronegativity.