Sunday, November 30, 2008

turnitin.com

HL ID: 2435304
SL 1 ID: 2435297
SL 2 ID: 2435302

Password: molecule

Monday, October 27, 2008

Midterm Review

Please post your top 3 topics you would like to go over. Don't worry about repeating topics others have posted. This simply gives me an idea of the topics the majority of the class needs assistance with. Also, I have posted 5 sets of worksheets on the www.schoolandteacher.com under projects (Fall Midterm). Please print these out and bring them to class tomorrow. All of the multiple choice midterm questions will come from these worksheets. Post any questions on the blog.

Thursday, October 16, 2008

IMPORTANT LAB INFO

For your introduction you may leave your equations unbalanced and you can assume the mole ratio of al to the alum is 1 to 1.
Post all questions on the blog.

Monday, September 29, 2008

Projects online

Your projects are now posted on the website. Any projects received from now on will be counted as late.

Sunday, September 28, 2008

Where to find study sheets

Email me your study sheets using anniemarostica@hotmail.com This will allow larger files than my school email. I will then post all study sheets under projects. SL will have separate projects for each period: Study Sheets P.1 and Study Sheets P.2. Make sure you click on the correct project! Remember, the projects must be emailed by 6:30pm MONDAY night.

Friday, September 26, 2008

IB Jigsaw Project

Schedule:
Friday
"Expert" groups were arranged and assigned one of the following topics:
1-Naming
2-Empirical/molecular formula and limiting reagents
3-Bohr's Model and equations with frequency, energy, wavelength, speed, and Planck's constant (h)
4-electron configuration, isoelectronic ions/atoms, periodic trends (size, electronegativity, ionization energy, SHIELDING)
5-Lewis Dot Structures (ionic, covalent, resonance)
6-Valence Shell Electron Pair Repulsion Model (VSEPR)
7-Polarity

Groups got together and brainstormed about how to organize their study sheet. *Remember* The best study sheets are concise and well organized. The use of graphic organizers is highly encouraged. This should be a resource for all students to use at a glance. The front of one page is ideal and it should NOT EXCEED one page front and back.
The guide MUST CONTAIN 3 examples and 3 problems for the other students to practice.

Monday
Create your study guide in class. Type up the guide and submit over email to Ms. Marostica (can't post documents on blog :( ). This is due NO LATER THAN 6:30 Monday night. Ms. Marostica will try to post these sheets on the website monday night but may not be able to as she will be out of the state. SO, it will be required that every expert group member have a copy of his/her own groups study sheet. For example, on Tuesday, every member of group 1 should come to school with a printed version of the study sheet. Make sure you exchange emails so you can send everyone a copy.

Tuesday
One member of each group will get together with each other. This means we will have several groups of 7 people. Each person will get 7 minutes to explain his/her topic. During this time, at least one problem should be attempted by the group with the help of the expert to guide them through the process of solving the problem. Ms. Marostica will post all study guides Tuesday night so you can review them for the quiz. The quiz will directly focus on topics 5-7 but you will need information from all topics to be successful as the material builds on eachother.

Saturday, September 6, 2008

Magnesium oxide lab

Hi chemistry studs!

Per. 1, we will be re-doing the lab on monday, instructions to follow in class on monday. For now, you should be reviewing and working limiting reagent problems. Please be ready to begin lab ASAP because I am going to try to do something else that day as well.

Per. 2 and 5, if you did not get a positive mass for grams of oxygen, please use the following data to calculate the mole ratio of Mg:O.
Mass of equipment (no Mg) = 29.809
Mass of equipment + Mg = 29.935
Mass of equipment + magnesium oxide = 29.990

These are not necessary correct results, they are simply sample data from another student's lab. The correct empirical formula is MgO (ionic bonding rules: O is -2 and Mg is +2 so they go together in a 1:1 ratio).
Use this data if you didn't get data that makes sense i.e. the magnesium oxide weighed less than the magnesium.
We will have a post lab on monday and start on chapter 7.

Hope your weekend is going well,
Ms. Marostica

Wednesday, September 3, 2008

lab info

The error bars should be set at 1, not .5. This is because you have to account for the .5 error twice when you subtract the two temps.
The actual ratios are as follows:
Bleach:Na2S2O3. 4:1
Bleach:KI. 3:1
Bleach:Na2SO3. 1:1

Also, checked on IB policy and you don't have to write the procedures in past tense...yea!

Tuesday, September 2, 2008

Graphing in Excel

Hey guys,
I posted directions for graphing in excel on the website under files to download. If you have any questions, shoot me an email or better yet, add it to this blog so you guys can help eachother. I'll of course chime in. Also, don't worry if you don't understand the directions or get confused. Just do the best you can because tomorrow we will hopefully work out the confusion.

Saturday, August 23, 2008

Summer-Packet Test Info

For the test on Wednesday you will be able to use the IB data booklet. This is the booklet the IB Organization allows you to use on the test. You will be able to use this booklet on every test in my class. This booklet is 38 pages long and is mostly filled with information you do not need at this point. The info that will be useful to you for the summer packet test includes:

Avogadro's constant
Periodic table

Unfortunately, you are not given a chart of common polyatomic ions so you will need to be familiar with these coming into the test. I would suggest making flashcards. Your test will include naming chemicals from formulas and stating formulas from names, writing and balancing equations, and simple stoichiometry with accurate significant figures. Again, let me know if you have any questions.

Wednesday, August 13, 2008

1st week info

Your summer packet will be due on Tuesday, Aug 26th (first day of school) and your test will be the next day, wednesday Aug 27th. Please prepare accordingly. We will be moving quite fast and have a lot to cover in the first 2 weeks. See you soon!

Monday, August 11, 2008

Summer is almost over :( and IB chem is about to begin :)

Alright future chemistry studs, the time has come to get serious about that packet if you haven't done so already. Please be aware that if you fail to turn in a completed packet on the first day of school you will be dropped from the course. NO EXCEPTIONS. This is a fairly easy assignment and if you have had trouble finding the time to complete it over the summer you are going to have an even tougher time during the year. Please feel free to email or post any questions. Good luck and see you all on August 26th!!

Wednesday, June 4, 2008

Class Website

Click here for the summer assignment and online tutorials.

Welcome IB Chemistry Students

I look forward to a wonderful year exploring the mysteries and magic of chemistry with you. It will be a challenging journey but will be well worth the effort.

Please make sure to check the blog regularly for answers to questions about the summer packet. This is a place for you to converse with your peers and myself to answer any questions or concerns that may arise during the summer. I will be putting updates and helpful hints on the blog throughout the summer and school year.

Don't hesitate to contact me with any questions.

-Ms. Marostica