Monday, October 22, 2007
Mon-Day 1
Bio- we had our Cells and Cellular Transport exam; I will be grading those exams today and tomorrow.
We reviewed some of our old labs and I stressed that labs must be neat, complete, and accurate. If you have ANY questions on future labs, ask me at extra help or email me BEFORE the lab is due.
We begin our new unit on Cell Division (recall that we thoroughly discussed when and why a cell must divide or die.
Chem 7- we covered the two requirements for a spontaneous reaction at any given temperature:
increasing entropy/chaos/randomness/disorder/number of ways to arrange particles
AND
decreasing enthalpy/PE (which means more STABLE, more strongly bonded products).
We focused on ways to predict and recognize increases or decreases in entropy:
solid phase has the lowest entropy; liquid or aqueous has higher entropy; gas phase has BY FAR the highest entropy of particles.
Also, given all the same phase, if the products have more "units"/moles of particles than do the reactants, there is an increase in entropy (you can arrange MORE particles in MORE ways).
Study hard (WRITE OUT lots of examples and do a lot of questions) tonight and tomorrow morning. I'll be in Room 301 for extra help (SPECIFIC questions that you have already worked on but that gave you difficulty).
I posted today's notes and the EXTENSIVE worksheet answers (Topic 3 workbook: Chemical Kinetics - that has every type of problem on it) answers to Blackboard. NOTICE that this answer sheet DEMONSTRATES proper test-taking skills of LABELING diagrams and identifying/underlining KEY TERMS in the questions! I expect to see the same on tomorrow's test.
Chem 8/9- we covered the two requirements for a spontaneous reaction at any given temperature:
increasing entropy/chaos/randomness/disorder/number of ways to arrange particles
AND
decreasing enthalpy/PE (which means more STABLE, more strongly bonded products).
We focused on ways to predict and recognize increases or decreases in entropy:
solid phase has the lowest entropy; liquid or aqueous has higher entropy; gas phase has BY FAR the highest entropy of particles.
Also, given all the same phase, if the products have more "units"/moles of particles than do the reactants, there is an increase in entropy (you can arrange MORE particles in MORE ways).
Study hard (WRITE OUT lots of examples and do a lot of questions) tonight and tomorrow morning. I'll be in Room 301 for extra help (SPECIFIC questions that you have already worked on but that gave you difficulty).
I posted today's notes and the EXTENSIVE worksheet answers (Topic 3 workbook: Chemical Kinetics - that has every type of problem on it) to Blackboard. Enjoy.
We reviewed some of our old labs and I stressed that labs must be neat, complete, and accurate. If you have ANY questions on future labs, ask me at extra help or email me BEFORE the lab is due.
We begin our new unit on Cell Division (recall that we thoroughly discussed when and why a cell must divide or die.
Chem 7- we covered the two requirements for a spontaneous reaction at any given temperature:
increasing entropy/chaos/randomness/disorder/number of ways to arrange particles
AND
decreasing enthalpy/PE (which means more STABLE, more strongly bonded products).
We focused on ways to predict and recognize increases or decreases in entropy:
solid phase has the lowest entropy; liquid or aqueous has higher entropy; gas phase has BY FAR the highest entropy of particles.
Also, given all the same phase, if the products have more "units"/moles of particles than do the reactants, there is an increase in entropy (you can arrange MORE particles in MORE ways).
Study hard (WRITE OUT lots of examples and do a lot of questions) tonight and tomorrow morning. I'll be in Room 301 for extra help (SPECIFIC questions that you have already worked on but that gave you difficulty).
I posted today's notes and the EXTENSIVE worksheet answers (Topic 3 workbook: Chemical Kinetics - that has every type of problem on it) answers to Blackboard. NOTICE that this answer sheet DEMONSTRATES proper test-taking skills of LABELING diagrams and identifying/underlining KEY TERMS in the questions! I expect to see the same on tomorrow's test.
Chem 8/9- we covered the two requirements for a spontaneous reaction at any given temperature:
increasing entropy/chaos/randomness/disorder/number of ways to arrange particles
AND
decreasing enthalpy/PE (which means more STABLE, more strongly bonded products).
We focused on ways to predict and recognize increases or decreases in entropy:
solid phase has the lowest entropy; liquid or aqueous has higher entropy; gas phase has BY FAR the highest entropy of particles.
Also, given all the same phase, if the products have more "units"/moles of particles than do the reactants, there is an increase in entropy (you can arrange MORE particles in MORE ways).
Study hard (WRITE OUT lots of examples and do a lot of questions) tonight and tomorrow morning. I'll be in Room 301 for extra help (SPECIFIC questions that you have already worked on but that gave you difficulty).
I posted today's notes and the EXTENSIVE worksheet answers (Topic 3 workbook: Chemical Kinetics - that has every type of problem on it) to Blackboard. Enjoy.
# posted by C @ 1:20 PM 
