Monday 4/18/16 Chemistry Periods 5-6
Please show the steps below to the students using the Elmo and projector. (A student can help you turn
it on if you need help.) This is the most important thing to me, because substitutes in the past have
forgotten to show something to the students. Please show them only each step at a time, or they’ll skip
ahead and not really read. You can use your best judgment to adjust the time if everyone finishes
reading earlier or later than my guess. Please write down on the back of this page the name of any
students who didn’t bring a book today, and assign them a book from the back cabinet, checking off
their name when they return it to you.
The directions for today are posted on my website!
1. Read the bottom of page 579, C. Calculating the pH of Strong
Acid Solutions. (~2 min.)
2. Take out your “16.2 Determining the Acidity of a Solution
Handout,” which we started the Friday before break.
Substitute or student volunteer: Please see the attached copy,
with some notes written on it in red and show it under the
Elmo. Show the bottom of the front side and the top of the
back using the Elmo. Note the 2 mistakes on their handout that
have been corrected in my red writing. Have them do the 4
practice problems on their own, then show them the answers.
3. Substitute or student volunteer: Now transition to the slides
provided (which continue their handout). Please show them
slides 1 and 2 and then have them try the #s 5 (slide 3) to 9
(slide 7). Then have them pull out a piece of scratch paper and
try slide 8.
4. Your lab from before break will be due on Wed., in class,
instead of tomorrow.
5. Your quiz for this chapter will be Wednesday.
6. Now start on your HW, which is to read pgs 573-578 and to
do HW #17: Pg 589 #11 (skip 11c), 17, 21. 23, 25. It is due
tomorrow in class.
Tuesday 4/19/16 Chemistry Periods 5-6
Please show the steps below to the students using the Elmo and projector. (A student can help you turn
it on if you need help.) This is the most important thing to me, because substitutes in the past have
forgotten to show something to the students. Please show them only each step at a time, or they’ll skip
ahead and not really read. You can use your best judgment to adjust the time if everyone finishes
reading earlier or later than my guess. Please write down on the back of this page the name of any
students who didn’t bring a book today, and assign them a book from the back cabinet, checking off
their name when they return it to you.
The directions for today are posted on my website!
1. Take out your but put away all writing utensils. Have a
student volunteer to show the answers to HW #17: Pg 589 #11
(skip 11c), 17, 21. 23, 25. Then collect it.
2. Your lab from before spring break is due tomorrow, in class.
On the back of the procedure and data table it has the
directions for how to set up the lab report. Attach the half
sheet of paper with the procedure and data to the front of the
lab report but not stapled at the top of the page. Staple it (with
more than 1 staple) directly below where you write “Data: See
Data” on your lab report.
3. Your quiz for this chapter will be tomorrow.
4. Now read pages 584-586. (~10 min)
5. Start on HW #18: pg 590 #22,24,30-36 (only a & b for all).
This will also be due tomorrow, in class.
6. Some student please volunteer to also handout HW #19: Ch.
16 Review. HW #19 will not be due until Thursday, but it will
help you on your quiz tomorrow if you do it tonight.
Wednesday 4/20/16 Chemistry Periods 5-6
Collect the students lab reports.
Have students take out HW #18: pg 590 #22,24,30-36 (only a & b for all) but put away all writing
utensils. Have a student volunteer to show the answers (~3 min only). Then collect it.
Remind them that HW # 19: Ch. 16 Review is due tomorrow, in class.
Show the following Warm-Up/review problems to the students using the Elmo. They should solve them
on a piece of their own paper. (Take ~7 min to answer the questions, then ~3 min to go over it. I want
to make sure they have enough time to finish the quiz.) Ask for volunteers to share answers under the
ELMO and how they got that answer.
Warm-Up/review
1. What is the pH of a solution with [H3O+] = 4.0 x 10-6 M?
2. What is [H+] of a solution with pH = 3.40?
3. What is [OH-] if the pH = 4.53?
4. Can and acid be both a strong acid and dilute?
Answers:
1. 5.40
2. 4.0 x 10-4 M
3. 3.4 x 10-10 M
4. Yes, HCl is a strong acid whether or not it is a high or low concentration.
Now the students will take a quiz. Ask a student to help pass out a pair of maroon or red folder dividers
to each table. (The put them between them to minimize cheating.) Please hand out the quizzes. They
may use calculators.
The students may write on the quiz. Please remind them that 1.0 x 10-14 is only 2 significant figures, and
remind them that they need to put units on all concentrations.
Please collect the quiz and place them on the island table for tomorrow’s substitute.
Thursday 4/21/16 Chemistry Periods 5-6
The students took a quiz yesterday. I instructed the sub to place them on the island desk after 6th period
yesterday. Please locate them.
Please use the Elmo and projector to show the Warm-Up on the notes provided (slide 1). (A student can
help you turn on the Elmo if you need help.) After ~8 minutes show them the answers.
Next, show them slides 2-4 and have them copy them as notes (except they don’t copy slide 4).
Now, pass out the quizzes, asking students to NOT take their own quiz or the quiz of someone nearby.
They should write “Corrected By” and their name at the bottom. Each multiple choice question is worth
1 pt (26 total). #27 is 3 points total (a,b,c), all or nothing, no points off for not having a double arrow but
-1 for charges being wrong or missing. #28 is 6 points: one point for the number, one for acidic, basic, or
neutral (for each a,b,c). #29 is similarly 6 points, one point for the number, one for acidic, basic, or
neutral (for each a,b,c). #30 is 1 point (-0.5 for no unit of M). This should total 42 points (26 + 3 + 6 + 6
+1). Have students give the quiz to the person whose it is. Let them look at it and discuss it for 2 or 3
minutes, then ask if anyone would like to ask the class a question about a problem. Now collect the
quizzes
Now go over the homework, HW #19 Ch. 16 Review using the solutions provided. Then collect it.
Lastly, if time, have them solve the review problems on slide 8.
Thanks!
Friday 4/22/16 Chemistry Periods 5-6
The students will take a test today. The blue folders with the multiple choice questions are in the island
desk near the projector, in the bottom cabinet. Also in there are the answer documents.
1. Have the students take out a piece of scratch paper and write their name on it. They must turn it in.
They may use calculators.
2. Ask a student to help pass out a pair of maroon or red folder dividers to each table. (The put them
between them to minimize cheating.)
3. While that is happening, please look at the back of the answer documents and pass out version A to
the 4 students nearest the wall (close to the door), then version B to the 4 students who sit next to
them, and so on, so that no 2 students sitting next to each other have the same version. (Note: The
version on the back is completely independent of the version of the multiple choice section).
4. Please pass out the blue folders with the multiple choice section of the exam. Give the four students
nearest the wall test #s 1-4, then 5-8 for the students sitting next to them, etc. I looked at the test and I
don’t believe they need periodic tables, but there are laminated ones available (I left them out) if they
say they need them.
5. Please give students the full time to complete the test. They should turn in the blue folder, the
answer document, and their scratch paper. Have students turn in the tests and have those who finish
early put the blue folders in numerical order. During the passing period organize the blue folders and
finish putting them in numerical order. Thanks!