1. Do Now
Begin working on the review outline you received in class yesterday, if you are not yet finished

2. Tomorrow’s Test Tomorrow’s Test is on Unit 2, The Chemistry of Life
Major Topics include:
Matter and bonds
Water and solutions
Macromolecules
Enzymes

3. Matter & Molecules
Be sure you are able to define and identify examples of:
Matter
Elements
Compounds
Atoms
Molecules
Make sure you know the basic parts of an atom
Nucleus
Protons
Neutrons
Electrons

4. Water
You should be able to identify and explain the following special characteristics of water:
High surface tension
High melting and boiling points
Density anomaly
Solvent properties
Also, be able to define polarity and explain how it gives water its special properties and the ability to make hydrogen bonds

5. Solutions & pH Define & identify: Solution, solute, & solvent
pH scale (acids <7, bases >7)
Hydronium (H3O+, more in acids)
Hydroxide (-OH, more in bases)
Concentration
Aqueous vs. non-aqueous

6. Macromolecules Class / Type Carbohydrates Proteins Nucleic Acids
Lipids
Building blocks
Mono-saccharides
Amino acids
Nucleotides
Smaller lipids
Building block characteristics
5-6 atom ring, 1:2:1 ratio C:H:O
20 types, make 2 bonds
Phosphate, sugar, base
Hydrophobic
Major functions
Store energy
Speed up reactions (enzymes)
Store information
Cell membrane component, long-term energy
Important types
Mono-, di-, and polysaccharides, esp. cellulose (plant cell walls)
Enzymes, esp. pectinase
DNA, RNA
Phospholipids (cell membrane lipids)

7. Enzymes Be sure you know what enzymes are What they do How they do it
Proteins made of amino acids
What they do
Speed up chemical reactions of substrates
How they do it
Lower activation energy