Wednesday the Fifth of October

Announcements:

I belive there is going to be a quiz tomorrow. I'm not 100 percent sure, but since Mr. P said there would be one every day, that would lead me to believe there is one tomorrow.

Today in Class:

We took a quiz and did a lot of taping. We also played a trivia game.

Homework:

Prepare for some intense Boggle tomorrow.

10.4.2011 MEASUREMENT

Announcements:

• we had a quiz today (Ionic Bonding)
• we have a quiz tomorrow
• 5pts each
• Did worksheets

Homework:

• Naming Ionic Compounds Summary - 1 (or page 15)

Body:

The first worksheet we did in class was Naming Ionic Compounds 2(page 11). This was basically just looking for the abbreviations and the elements name. After that we did page 12, Polyatomic Ions 1. Poly means many, atom means atom (duhh), and -ic means together, SOO many atoms together! These are confusing and this video should help explain and make it simpler. http://www.youtube.com/watch?v=gmcLYWtjXgQ

I think it'd be a good idea to memorize these. there is only 7 of them. Yes there are 8 on the sheet but we didnt do bicarbonate. These are the symbols for the polyatomic ions.

• sulfate SO4 charge= -2
• nitrate NO3 charge= -
• phosphate PO4 charge= -3
• hydroxide OH charge= -
• carbonate CO3 charge= -2
• ammonium NH4 charge= +3
• acetate CH3COO charge= -

CATion and ANion are positive and negative. Think of cat as in t looks kind of like a + sign and an.......well doesn't. Parentheses are used sometimes when a molecule, as opposed to an element is present more than once. Transition metals 1 (pg 13), we did 1, 4, 6 and 7. Number seven asks about when we put roman numerals in the name of a n ionic compound. We only use them when using transition metals and only when writing words out.

ROMAN NUMERALS

ok im on youtube looking for a video that explains roman numerals, and that autocomplete thing shows me roman numerals song. so i click on it and i found a riddle. so i thought id share.

http://www.youtube.com/watch?v=KQkKzqN0Hjc

this next one actually explains roman numerals

http://www.youtube.com/watch?v=QrbHF7upzp8

Next we did page 14 or Transition Metals 2

Transition metals are the ones that are covered up when we fold our periodic tables. From these worksheets i think its a good idea to actually memorize the periodic table bc its just annoying to have to search for every element or symbol you see.

POLYATOMIC IONS ARE ALSO ON THEE PERIODIC TABLE :D

dont forget the homework is page 15, Naming Ionic Compounds Summary 1

The next scribe is Jameson B. because he hasn't gone yet. muahaha :P

Chemistry Begins! 10/3/11

*WE HAVE A QUIZ TOMORROW ABOUT THE CONTENT ON PAGE 8-10

*HOMEWORK: There was no homework unless you didn't finish page 8-10 in your notebook.

*AGENDA:

1. Discussed weekly quizzes

-We will start having quizzes once every week. They will only be worth about 5-10 points and they are to help Mr. Paek see who's struggling so they won't fall behind.

2. We watch this clip:

http://www.youtube.com/watch?v=cqeVEFFzz7E

^^^demonstration of what happens when different Alkali metals are mixed with water

3. We discussed the periodic table (the salmon colored sheet):

-We did some labeling which you should copy off of someone who sits near you if you didn't complete labeling

4. Completed pages 8-10 in our chem notebooks

-All atoms want to be like noble gases to become stable

-Go through the Chemthink ion tutorials if you need a review or help with the pages

*NEXT SCRIBE WILL BE: KATIE F. (and of course it was random....)

September 28th Blog

Homework: If you didn't finish the post lab write up or Chemthinks

Lab: So today we did a lab that compared different types of metals. We first looked at their shape, color, and how shiny they were. Second we checked if the metals were conductors by using some gadget that had bulb that light up. Third we took a hammer and hit the metals to see if they were brittle or not. Lastly we took test tubes and put drops of HCL and ClC2 separately and observed their reactions.

Next scriber is Emma B

September 16th Scribepost

Homework: Webassigns due Wednesday, September 21st

Lab: The server was down on Friday, so we didn't end up watching the videos Mr. Paek had planned for us, so we went straight to the lab.

In the lab, entitled "Matter Lab Stations", we drew a picture of what we saw at each station (black, yellow, and green spheres that represented elements and molecules), wrote the chemical formulas of what was present (black=carbon, yellow=hydrogen, green=oxygen), and then compiled a list of which terms applied to that station.

Demo: After the lab, Mr. Paek did a demo to introduce the concept of physical and chemical changes -


This demo is an example of a chemical change, because (iodine) molecules are being broken apart. Wikipedia's definition of a physical change is changes that occur when objects or substances undergo a change that does not change their chemical nature. Another trick that Mr. Paek tought us when contemplating whether it is physical or chemical is to ask: "Can you get it back?" For instance, when you rip a piece of paper in half, you can simply get it back by taping the two pieces together (physical change). In contrast, if you were to burn the piece of paper, (chemical change) you can't get it back. This is an example of how combustion always results in a chemical change.

**We have that science test that everyone has to take on Tuesday, September 20th. Don't worry, it's not for a grade!

Next scriber is John B! (Sorry, completely random)

September 15 Scribepost

Homework: Atomic Level Pics 1,2, & 3 for tomorrow and Webassigns due next week!

In class today we graded our quizzes and took some notes on matter, molecules, compounds, etc. After that we had some class time to do out homework!

Notes:

-Matter: has mass and takes up space (volume)

-Mass is the amount of matter

-Atom is smallest unit of matter

-116 different types of atoms = elements

-Atoms bonded together = molecules

Molecules vs. Compounds

-Molecules: any 2 or more atoms bonded together

-Compounds: 2 or more DIFFERENT types of atom bonded together

-Combinations of different atoms and or molecules = mixture

-If only one type of atoms or molecule is present = pure substance

Mixture vs. Pure Substance

-Mixture: combination of 2 or more different atoms or molecules

-Pure Substance: only 1 type of atom or molecule

States of Matter

-Solid: atoms/molecules close together moving slowly

-Liquid: atoms/molecules medium distance moving faster

-Gas: atoms/molecules far apart moving faster

-Aqueous (aq): molecules dissolved in solution

Thats All!

next scriber is Kat!

September 14th Scribepost

Homework= Web Assignments due next week!!


Well instead of meeting in the classroom, we went to the math lab.

1. We logged on to the computers and went to moodle.
2. On moodle, we went to our chemistry class's page and clicked on the ChemThink link.( right under Web Assign)
3. After that we clicked on Not Registered, its on the right and under Forgot Your Login Info.?
4. Next you have to type in a code.(6163-2734-5502). It expires 9/28/11.
5. That will take you to another page. Type in your first and last name, a username( preferably your ID number), make up a password, click period 4 and click register.  

The assignment is to do the tutorial( Click Introduction->Click Particulate Nature of Matter-> Click Tutorial ) and while you do it, make notes in your journal, titled ChemThink Matter Notes because they will be checked by Mr. Paek.

 After the tutorial, complete the quiz. (only 10 questions)