Tuesday, September 27, 2011
Tues-Day 2
AP Chem - as we get into our solution stoichiometry unit, we need to know more reaction types, so we went through formula and net ionic equation writing for the two types of double replacement reactions.
We then did the same for the four classic "gas-forming" (CO2, SO2, H2S, and NH3) reactions.
Tomorrow is the Unit 2 exam on moles and stoichiometry I; check yesterday's entry for the list of question types.
Bio - we continued our focus on the factors that affect enzymes/biological protein catalysts.
We learned the meaning of pH - how it indicates the level of acidity or basicity of a solution.
We saw that having too low OR too high a concentration of H+ ions in solution causes reactions with the amino acids in a protein, which then causes denaturing of the protein.
Each protein has an optimal or best pH at which it maintains its proper functional shape by having the ideal amount of interaction between the H+ ions and its amino acid sidegroups.
In 7/8, we also looked at the effect of varying enzyme and substrate concentrations; we then continued our biochemistry model lab.
We then did the same for the four classic "gas-forming" (CO2, SO2, H2S, and NH3) reactions.
Tomorrow is the Unit 2 exam on moles and stoichiometry I; check yesterday's entry for the list of question types.
Bio - we continued our focus on the factors that affect enzymes/biological protein catalysts.
We learned the meaning of pH - how it indicates the level of acidity or basicity of a solution.
We saw that having too low OR too high a concentration of H+ ions in solution causes reactions with the amino acids in a protein, which then causes denaturing of the protein.
Each protein has an optimal or best pH at which it maintains its proper functional shape by having the ideal amount of interaction between the H+ ions and its amino acid sidegroups.
In 7/8, we also looked at the effect of varying enzyme and substrate concentrations; we then continued our biochemistry model lab.
# posted by C @ 6:56 PM 
