Update for 4/30/2009

Here are the updates for today:

Reminder To all students:
• E-mail me at "drliu.iths@gmail.com" from your e-mail account so I can copy+paste your e-mail address to my gradebook. This will be used to send your 2nd Marking Period Progress report. Please put the information (Last name, First Name, Period #) in the subject heading of the letter.

Regent Chemistry 2:
• HW #20 (Due tomorrow): Do p. 556 Problems #8, 9, 11, 12.
• Reminder: If you have not finished SmartScience Labs (Solubility and Crystal Violet Bleaching), the automatic 5 pts deduction is in effect until the end of this week (next week will be 10 pts deduction).
• All Late/Missing Assignments make-up for 2nd marking period are due by tomorrow (5/1).
• All Chem 1 Make-up labs are due by 5/8/2009 (next Friday)
• Lab Report #24: pH Indicators due next Monday.
• Unit 11 Exam next Tuesday.

Environmental Science 1:
• No HW today.

Environmental Science 2:
• Finish both the graph and answer all the questions on the Activity sheet. Remember to put your name on the sheet before your submission for tomorrow (which is the submission deadline for 2nd Marking Period).
• There will be a quiz tomorrow on ozone depletion.

Dr. Liu

Update for 4/29/2009

Here are the updates for today

Reminder To all students:
• E-mail me at "drliu.iths@gmail.com" from your e-mail account so I can copy+paste your e-mail address to my gradebook. This will be used to send your 2nd Marking Period Progress report. Please put the information (Last name, First Name, Period #) in the subject heading of the letter.

Regent Chemistry 2:
• HW #19 (Due tomorrow): Holt - Read pp. 548-556, Do p. 556 Problems #1, 2, 5, 7.
• Reminder: If you have not finished SmartScience Labs (Solubility and Crystal Violet Bleaching), the automatic 5 pts deduction is in effect until the end of this week (next week will be 10 pts deduction).
• Lab. #24 will continue tomorrow during 1st Period in Rm. 311.
• All Late/Missing Assignments make-up for 2nd marking period are due by this Friday (5/1).
• All Chem 1 Make-up labs are due by 5/8/2009 (next Friday)
• Possible Unit Exam early next week.

Environmental Science 1 & 2:
• No HW today.

Dr. Liu

Update for 4/28/2009

Here is the update for today:

To all students:
• E-mail me at "drliu.iths@gmail.com" from your e-mail account so I can copy+paste your e-mail address to my gradebook. This will be used to send your 2nd Marking Period Progress report. Please put the information (Last name, First Name, Period #) in the subject heading of the letter.

Regent Chemistry 2:
• No HW today (finish HW #18 if you haven't).
• Reminder: If you have not finish SmartScience Labs (Solubility and Crystal Violet Bleaching), the automatic 5 pts deduction is in effect until the end of this week (next week will be 10 pts deduction).
• Lab. #24 will continue tomorrow during 9th period for Group C in Rm. 311.
• All Late/Missing Assignments make-up for 2nd marking period are due by this Friday (5/1).
• All Chem 1 Make-up labs are due by 5/8/2009 (next Friday)
• Possible Unit Exam at the end of this week.

Environmental Science 1:
• No HW today.

Environmental Science 2:
• Finish the concept map for Homework.

Dr. Liu

Update for 4/27/2009

Here is the update for today:

Regent Chemistry 2:
• HW #18 (Due tomorrow): Holt - Do p. 541 Problems #1, 2, 3, 4.
• If you haven't finish SmartScience Labs assigned during the Spring Break (Solubility and Crystal Violet Bleaching), keep in mind that the automatic point deduction of 5 pts (out of 20 pts possible) is in effect starting this week. Further deductions will be imposed if not completed by Friday of this week.
• Reminder: Lab. #24 for Group B tomorrow 1st PD in Rm. 311.
• Possible Unit Exam by the end of this week.

Environmental Science 1 & 2:
• No HW today.

Dr. Liu

Update for 4/24/2009

Here is the update for this weekend:

Regent Chemistry 2:
• HW #17 (Due Monday): Holt - Read pp. 539-547; Do p. 547 Problem #1, 2, 3, 6.
• Lab. Report #23 due on Monday.
• All late/missing assignments for 2nd MP is due by 5/1 (next Friday).
• All Chem 1 Term 1 Make-up Labs due by 5/8.
• Saturday Regent Preps for Chemistry will begin on 5/9.
• Expect a unit exam near the end of next week.

Environmental Sciences 1 & 2:
• No HW for this weekend.

Dr. Liu

Update for 4/23/2009

Here is the update for today:

Regent Chemistry 2:
• No HW today. Complete SmartScience Labs 1) Crystal Violet Bleaching & 2) Solubility by tomorrow. Automatic point deductions will be taken after tomorrow.
• Lab. Report #23 due next Monday.
• The deadline for hand in all late/missing assignment for 2nd marking period is 5/1/2009.
• All Chem-1 make-up (online) labs due by May 8, 2009.

Environmental Sciences 1 & 2:
• No HW today.

Dr. Liu

Update for 4/22/2009

Here is the update for today:

Regent Chemistry 2:
• HW #16 (Due tomorrow): Holt - Read pp. 535-538; Do p. 538 Problems #4, 6, 10.
• Lab. #23 Continue for Group A 1st Period tomorrow.
• Complete SmartScience Labs 1) Crystal Violet Bleaching & 2) Solubility by this Friday.
• The deadline for hand in all late/missing assignment for 2nd marking period is 5/1/2009.
• All Chem-1 make-up (online) labs due by May 8, 2009.

Environmental Sciences 1 & 2:
• No HW today.

Dr. Liu

Update for 4/21/2009

So here we go...

Regent Chemistry 2:
• PD. 4 Test Correction due tomorrow.
• HW #15 (Due tomorrow): Holt - Read pp. 530-534; Do p. 538 Problems #1, 2, 3.
• Lab. #23 for Group C tomorrow 9th period in Rm. 311.
• Reminder: Complete both SmartSciece lab - Crystal Violet Bleaching and Solubility, by this Friday.
• Deadline for all Chem-1 term make-up labs (online SmartScience Labs): May 8th.

Environmental Science 1 & 2:
• No HW today.

Dr. Liu

Update for 4/20/2009

Okay, welcome back from the Spring Break!

Here are the updates:

Regent Chemistry 2:
• If you have received the graded Unit 10 Exam, you will be allowed to do a test correction in accordance with the following guideline (Due Tomorrow ONLY): Period 4, Take Note!
i) For Multiple Choice questions: Label the question #, Write down what you think is the correct answer, and provide a written explanation for your final answer. (No explanation, No Credit).
ii) For Constructive response questions: For Question #16, 17, 20, Write down the question as well as your answer (& show work where it's applicable). For #18 & #19, Be sure to explain and answer the question completely.
iii) If your original grade is below 60, the maximum credit would be 30 pts. If your original grade is 60 and above, the maximum # of credit would be 20. Attach your test correction sheet to your exam and hand both of them in tomorrow (stapled).
• The deadline for both required SmartScience Labs: Crystal Violet Bleaching and Solubility is this Friday. If you have trouble access or complete the lab., please see Mr. Ismael to arrange for school's computer access.
• The deadline for completion of all Chem 1 make-up labs is May 8.
• Regular Lab schedule (Lab. #23) resume tomorrow 1st period in Rm. 311 for Group B.

Environmental Sciences 1 & 2:
• No HW today.

Dr. Liu

Chemistry 1 Make-up Lab List & etc...

Update for Regent Chemistry 2 Class:

Listed below is a list of SmartScience Lab. activities that you can use to make-up the labs you missed during Chemistry 1 term. I've tried to select those labs which cover the same topics as those that we have covered in Chem. 1 term, and you may choose any of the labs listed to satisfy the lab. requirement (for Chem 1). For those that missed Chem. 2 labs and thus need to make up Chem 2 labs, I am enclosing a list below as well, but keep in mind that some of the topics haven't been covered yet, so choose the activities that is lower in number...

Chem. 1 Lab List:
1. Lab Glassware Exercise
2. Measurement
3. Volume Graph
4. Chemical Change
5. Brownian Motion
6. Gas Volume-Temperature
7. Gas Pressure-Temperature
8. Liquid Volume-Temperature
9. Periodic Table Activity
10. Chemical Periodicity
11. Molar Volume
12. Hydrate Analysis Procedure
13. Analysis of Hydrates

Chem. 2 Lab List
14. Heat Conduction in Solids
15. Specific Heat
16. Evaporation
17. Solubility
18. Crystal Violet Bleaching
19. Enzymes
20. Reaction Rate Wet Lab
21. Equilibrium Constant
22. Acid-Base Titration
23. Indicators
24. Iron-Tin Reaction
25. Oxidizing Power

• If you cannot access the labs. from home for any reason, you may complete the labs by going to the make-up labs sessions to be held in school during next week Monday-Thursday from 9 AM ~ 1 PM (to be hosted by Mr. Ismael).

• Also, for those of you that didn't get a copy of Chemistry Spring Break Pkg, here is the link.

• The due date for all Chem 1 Make-up labs completion is by May 1st, 2009.


Enjoy your break!

Dr. Liu

Update for 4/8/2009

Finally, the Spring Break is here!

OK, so here we go:

Regent Chemistry 2:
• Complete Lab. Report #22 - Equilibrium. Due Monday after the recess.
• Complete Spring Break Package - Take-Home Exam. Due Monday after the recess.
• Everyone must complete 2 SmartScience Online Labs for Chemistry 2 Term (Including electronic lab. report) during the Spring Break. The two labs are: 1) Crystal Violet Bleaching (under Kinetic & Equilibrium) and 2) Solubility (under Chemical Bonding).
• For Chem 1 Lab make-ups: I will post a list of online labs that you can choose for term 1 make-up. Try to complete your make-up labs before the break is over.
• If for any reason you're having difficulty accessing online labs from home, Mr. Ismael is conducting make-up lab sessions next Monday thru Thursday from 9 AM to 1 PM in the school using school's computing facility. This would be an option for you if you can't do it from home.

Environmental Sciences 1 & 2:
• No HW or project. Enjoy your break!

Dr. Liu

Update for 4/7/2009

Here is the update for today:

Regent Chemistry 2:
• No HW today.
• Group A - Lab. #22 tomorrow 1st Period in Rm. 311.
• Verify your online SmartScience Lab access (for instruction see last Thursday's posting).
• Lab. Report #22 will be due on the first day after you're back from the Spring Break recess.

Environmental Science 1 & 2:
• No HW today.

Dr. Liu

Update for 4/6/2009

Here is the update for today:

Chemistry 2:
• Unit 10 Exam Tomorrow.
• Revised schedule for Lab. #22 this week: Same room (Rm. 311)
If you were scheduled for Tues. 1st Pd => No change, Go at same time.
If you were scheduled for Wed. 9th Pd => Go to lab on Tues. 9th Period.
If you were scheduled for Thur. 1st Pd => Go to lab on Wed. 1st Period.
• Check to see if you can login to your SmartScience Lab. Account (for instruction, see last Thursday's posting). Write me an e-mail at drliu.iths@gmail.com and describe what kind of problem you encounter so I can arrange to have someone solve the problem. If you cannot access the smartscience lab from home, please inform Mr. Ismael that you will need to sign up for a few lab-sessions during the Spring break to complete your assignment.

Environmental Sciences 1 & 2:
• Regent Style Assessment on AMNH Project/Module tomorrow.

Dr. Liu

Chemistry 2 Unit 10 Review Sheet - 4/3/09

Sorry guys and gals, I was busy working on an home improvement project all day Saturday, so I didn't get a chance to finish and post the review sheet...

Here is the link to the review sheet.

Work on it during the weekend, so you'll be able to derive the maximum benefit when we go over it on Monday.

Dr. Liu

Update for 4/3/2009

Alright, here is the update for this weekend:

Chemistry 2:
• Verify your SmartScience Lab Account access (i.e., make sure you can login). For instruction see yesterday's posting.
• Lab. Report #21 due Monday (for Part II data see Wednesday's posting).
• Review Sheet to be posted over the weekend (Saturday or Sunday).
• Unit 10 Exam will be on Tuesday.
• For Next week's lab, here is the change in schedule: Same room (Rm. 311)
If you were scheduled for Tues. 1st Pd => No change, Go at same time.
If you were scheduled for Wed. 9th Pd => Go to lab on Tues. 9th Period.
If you were scheduled for Thur. 1st Pd => Go to lab on Wed. 1st Period.

Environmental Sciences 1 & 2:
• For those group which did not get a chance to present today, we will finish the presentation on Monday.
• Regent Style Assessment For this module is going to be on Tuesday!

Have a good weekend.

Dr. Liu

Update for 4/2/2009

Here is the update for today:

Chemistry 2:
• No HW today. However, I would like to ask you to verify your online lab accessing capability.
1. Go to URL: http://smartsciencelab.com/NYCPS
2. Select: Information Technology High School
3. Find your name in one of my 3 classes: Dr.Liu - Chem 21, Dr.Liu - Chem 22, Dr. Liu - Chem 23. (It could be in any of the 3 classes).
4. Once you find your name, Select your name, Then Type in your 9-digits OSIS # (Student ID #) as your password and press Login button.
5. Now you're in. You should be able to click on a few activities and see how it opens up separate windows for the activities.
Tips: Firefox should work best, while Internet Explorer and Safari are both supported. Turn off "Block pop-up windows" since the software runs Java 1.5 and above in pop-up windows. Let me know if you have any problem login.
• Part II data for Lab. #21 was posted yesterday. Use that data if you did not get a chance to finish Part II of the experiment.
• Unit 10 Exam to be held next Tuesday.

Environmental Sciences 1 & 2:
• Presentation Tomorrow. Make sure you have a written documentation of your presentation or how you want to go about presenting your study of the problem (to be submitted after your presentation). Remember, you must be present and contribute to the presentation to receive the credit.

Dr. Liu

Update for 4/1/2009

Unit Exam Tomorrow.



Sorry, can't help it, it's April Fool's Day!

Okay, back to our regular program:

Chemistry 2:
• HW #14 (Due tomorrow): Holt - Read pp. 512-518; Do p. 518 Q.: #1, 2, 3, 8, 9
• Reminder: Group A Lab. #21 tomorrow 1st period in Rm. 311.
• Unit 10 Exam likely to be held on Monday next week...
• Please check your Chem 1 Lab record on the bulletin board in Rm. 336. This will determine # of make-up labs needed for you to take to satisfy 1st semester chemistry lab requirement.
• For those of you that did not get a chance to do part II of the experiment on Tuesday, please note the following changes.
1. Instead of adding 10 mL 2.0M HCl into a beaker with 50 mL tap water, now we use 30 mL 2.0M HCl with 10 mL water.
2. Fill the 3 test tubes each with 10 mL of acid solution from step 1.
Data:
Test Tube 1 with rolled strip: reaction time is 215 sec.
Test Tube 2 with flat strip: reaction time is 195 sec.
Test Tube 3 with strip cut into 6 pieces: reaction time is 220 sec.
We also noted that while flat strip float vertically in the test tubes (Tube 2), the cut pieces all stay near the surface of the acid solution (Tube 3).

That should be enough observation for you to answer the question and do the analysis and discussion.


Environmental Sciences 1 & 2:
• Please work on the group presentation to be due this Friday.

Dr. Liu