Wednesday, March 4, 2009
Wednes-Day 2
AP Chem- TEST: INSIDE INFO! This exam covers a lot of material so I want you to be able to focus your study by doing as many of the following types of practice problems as is possible:
(these question types and ONLY these question types will appear on tomorrow's exam)
not in this order necessarily-
1. pH calculation of a strong MONOPROTIC acid of given/known concentration
2.pH calculation of a strong base (either MONOhydroxy OR DIhydroxy!!!-beware trap!!!-see notes) of given/known concentration
(For 3-6, an organizer/ICE Table is suggested and probably helpful; either way, all work must be shown, step by step).
3. given Ka (OR pKa) AND concentration, determine pH AND percent ionization of a weak acid
4. given (equilibrium) pH AND concentration of a weak acid, determine its Ka OR pKa
5. given Kb (OR pKb) AND concentration, determine pH AND percent ionization of a weak base
6. given (equilibrium) pH AND concentration of a weak base, determine its Kb OR pKb
7. EXPLAIN, in terms of (1) H-X bond strength and (2) H-X bond polarity, the relative strengths of a series of acids.
8. explain, in terms of water hydrolysis by an anion, cation, or both ions, how a given salts forms an acidic, basic, or neutral solution. For solutions in which BOTH ions cause hydrolysis, determine, based upon given pKa, Ka, pKb, or Kb of the ions OR their CONJUGATES, whether the solution will be SLIGHTLY acidic or SLIGHTLY basic.
9. be able to write examples (names, formulas, and balancing) of organic substitution, addition, combustion, esterification, and neutralization reactions.
10. be able to name, draw, and write the formula of each type of organic molecule (I won't put more than 6 carbons in the formula): alkanes, alkenes, alkynes, alkyl halides, alcohols, ethers, aldehydes, ketones, organic acids, esters, and amines.
That's enough! There won't necessarily be 10 questions but I formed the test from the above CollegeBoard objectives.
Obviously, this material should not be crammed and the upcoming tests will cover as much material or, if less material is covered, the material will be even more complex (how is that possible? I know).
Bio 6- we reviewed and analyzed HOW to write a THOROUGH answer to scientific investigation questions. Study for tomorrow's exam by reviewing your notes, the posted hw objectives, the practice fill-in quiz, AND by practicing your test-taking skills: underlining key words, DRAWING and labeling your answer along with a brief description that refers to your diagram; READING your answer and MAKING SURE that YOUR keywords match/answer the key terms in the question.
Practicing the above, you will do very well tomorrow.
Bio 7/8- we reviewed and analyzed HOW to write a THOROUGH answer to scientific investigation questions.
We finished the "reaction time" lab by completing the "distraction" part; at the neuron level, distractions are just MORE stimuli that cause your receptors to send more electrochemical impulses to your spinal cord and to your brain for processing. One neural pathway may slow down or interfere with another neural pathway leading to a slower response/"reaction time".
Study for tomorrow's exam by reviewing your notes, the posted hw objectives, the practice fill-in quiz, AND by practicing your test-taking skills: underlining key words, DRAWING and labeling your answer along with a brief description that refers to your diagram; READING your answer and MAKING SURE that YOUR keywords match/answer the key terms in the question.
Practicing the above, you will do very well tomorrow.
(these question types and ONLY these question types will appear on tomorrow's exam)
not in this order necessarily-
1. pH calculation of a strong MONOPROTIC acid of given/known concentration
2.pH calculation of a strong base (either MONOhydroxy OR DIhydroxy!!!-beware trap!!!-see notes) of given/known concentration
(For 3-6, an organizer/ICE Table is suggested and probably helpful; either way, all work must be shown, step by step).
3. given Ka (OR pKa) AND concentration, determine pH AND percent ionization of a weak acid
4. given (equilibrium) pH AND concentration of a weak acid, determine its Ka OR pKa
5. given Kb (OR pKb) AND concentration, determine pH AND percent ionization of a weak base
6. given (equilibrium) pH AND concentration of a weak base, determine its Kb OR pKb
7. EXPLAIN, in terms of (1) H-X bond strength and (2) H-X bond polarity, the relative strengths of a series of acids.
8. explain, in terms of water hydrolysis by an anion, cation, or both ions, how a given salts forms an acidic, basic, or neutral solution. For solutions in which BOTH ions cause hydrolysis, determine, based upon given pKa, Ka, pKb, or Kb of the ions OR their CONJUGATES, whether the solution will be SLIGHTLY acidic or SLIGHTLY basic.
9. be able to write examples (names, formulas, and balancing) of organic substitution, addition, combustion, esterification, and neutralization reactions.
10. be able to name, draw, and write the formula of each type of organic molecule (I won't put more than 6 carbons in the formula): alkanes, alkenes, alkynes, alkyl halides, alcohols, ethers, aldehydes, ketones, organic acids, esters, and amines.
That's enough! There won't necessarily be 10 questions but I formed the test from the above CollegeBoard objectives.
Obviously, this material should not be crammed and the upcoming tests will cover as much material or, if less material is covered, the material will be even more complex (how is that possible? I know).
Bio 6- we reviewed and analyzed HOW to write a THOROUGH answer to scientific investigation questions. Study for tomorrow's exam by reviewing your notes, the posted hw objectives, the practice fill-in quiz, AND by practicing your test-taking skills: underlining key words, DRAWING and labeling your answer along with a brief description that refers to your diagram; READING your answer and MAKING SURE that YOUR keywords match/answer the key terms in the question.
Practicing the above, you will do very well tomorrow.
Bio 7/8- we reviewed and analyzed HOW to write a THOROUGH answer to scientific investigation questions.
We finished the "reaction time" lab by completing the "distraction" part; at the neuron level, distractions are just MORE stimuli that cause your receptors to send more electrochemical impulses to your spinal cord and to your brain for processing. One neural pathway may slow down or interfere with another neural pathway leading to a slower response/"reaction time".
Study for tomorrow's exam by reviewing your notes, the posted hw objectives, the practice fill-in quiz, AND by practicing your test-taking skills: underlining key words, DRAWING and labeling your answer along with a brief description that refers to your diagram; READING your answer and MAKING SURE that YOUR keywords match/answer the key terms in the question.
Practicing the above, you will do very well tomorrow.
# posted by C @ 7:30 AM 
