10/3/11

Announcements: None.
Homework: None. Quiz tomorrow on Ions and Ionic compounds.
Body: Today we went over some new material. Including atoms and the types of ions they form, formulas of ionic compounds and naming ionic compounds.

Here are the answers for the first section in IONS-1:

1.)

Li- 1+ Ca- 2+ N- 3- Al- 3+
Cl- 1- O- 2- Li- 1+ Ar- 0
Na- 1+ P- 3- S- 2- Mg- 2+

2.)

Na2S
FeCl3
CaO
MgF2
KCl
(skip the next two)
CaBr2
Al2O3

IONS-2

3.)

K2S
Caf2
MgO
LiF
Kcl
CaS
Li2S
AlBr3

4.)

Correct
AlCl3
Correct
Not going to react
Correct

The next scribe will be..... Jacob R!

Wednesday-9/28/11

Announcements: None

Homework: Finish Chemthinks (2) and the Metals,Nonmentals, and Metalloid Lab due friday

-Take notes for the Chemthinks

Body:

Mr. Paek introduced a new lab in class about becoming familiar with chemical and physical properties of metals, nonmentals, and metalloids.

Here are the results from the lab if you missed it

Part one:

Sample A- silver, shiny, metalic, and round.

Sample B- Black, clusters, small, ashy

Sample C- Tiny, shiny, glittery, dark gray

Sample D- Pebbles, metalic, silver, mini

Sample E- Dust, yellow, powder-like

Sample F- silver, tiny

Sample G-gray,dusty,chalk-like

Part two:

Sample A-malleable

Samble B-brittle

Sample C-malleable

Sample D-malleable

Sample E-brittle

Sample F-Malleable

Sample G- malleable

Part three:

Sample A-conductor

Sample B-non conductor

Sample C-conductor

Sample D-conductor

Sample E-non conductor

Sample F-non conductor

Sample G-non conductor

Part Four: (Do HCL only)

Sample A- stays the same, no reaction

Sample B- Stays the same, no reaction

Sample C-bubbles and fizzes, water changes color, reaction

Sample D- No reaction

Sample E- no reaction

Sample F-bubbles, reaction

Sample G-bubbles, reaction

Part Five- (skip densities and do CuCl2 only)

sample a-turns black, melts and bubbles, reaction

sample b- bubbles, reaction

sample c-turned black, reaction

sample d- no reaction

sample e-no reaction

sample f- color changes to green and is warm, reaction

sample g-color changes to brown, reaction

Finish the postlab questions by looking at the element info/properties :)

Next scribe is RESSSSLER.

Class on 9/16/11

Announcements: Unit Test on Thursday, Chem Day on Friday

Homework: Finish Web-Assigns before unit test

Body

Mr. Paek went over the differences between Molecules and Compounds, and also the difference between a Mixture and a Pure Substance

Molecule: Any 2 or more atoms bonded together

Compounds: 2 or more DIFFERENT types of atoms bonded together

Mixture: Combo of 2 DIFFERENT types of Molecules or Atoms

Pure Substance: Only 1 type of atom or molecule

We also did a Matter Lab where we drew pictures of what we saw at each station, wrote the chemical formulas of what was present, and then make a list of terms that apply to the station.(ex. Atoms, Molecules, Elements, Compounds, Pure Substance, Mixture)

Black=C

Yellow=H

Green=O

STATION 1

Picture: 6 black atoms Formula: 6C Terms: Atoms, Pure Substance, Element

STATION 2

Picture: 4 yellow molecules(2 yellows bonded) Formula: 4H2 Terms: Molecules, Pure Substance

STATION 3

Picture: 1 black atom, 1 black molecule(2 blacks bonded), 2 green atoms, 1 yellow molecule(2 yellows bonded), 1 compound(2 yellows, and a black bonded) Formula: 2O + CH2 + H2 + C2 +C Terms: Molecule, Atom, Compound

STATION 4

Picture: 1 black atom, 1 black molecule(2 black bonded), 1 black molecule(3 blacks bonded) Formula: C2 + C3 + C Terms: Mixture, Atom, Molecule

STATION 5

Picture: 2 green atoms, 1 green molecule(2 greens bonded) Formula: O2 + 2O Terms: Atom, Molecule, Mixture

STATION 6

Picture: 2 Compounds(3 yellows, 1 black, 1 green bonded) Formula: 2H3 2C 2O Terms: Molecule, Compound, Pure Substance

And THAT is what we did on Friday

The next scribe will be...................................Dambi

Measurements 9.14.11

Announcements: None

Homework: Web-assigns

Body:

Went to Science Lab and registered into ChemThink!

1. On moodle go to Chemistry
2. Click "link to ChemThink"
3. Then below the log-in click the "Not Registered"
4. Put your username: ID Password: anything
5. activation code: 6163-2734-5502
6. Log in as soon as you have completed making an account
7. As soon as you log in click "Introduction" ; "Particulate Nature of Matter" ; "Tutorial"
8. Take notes during tutorial then at the end take the quiz
9. If in one try you get 10 out of 10 extra credit is given :)
10. Keep trying till you get 10 right!!!

This is what we did all day and if you finished it early you got to do web-assigns :D

The next scribe will be...........Katrina:D

9/8/2011- Measurement

Anouncements: No Quiz this week was moved to next week.

Homework: Do fig sig worksheet

Do web assign before 11:59 before the day of the test

Body: Today in class we took a lab quiz.

Lets try this again the next scribe will be........ Nawon!

9/7/2011 - Measurement

Anouncements : Quiz Thursday on Density and Sig Fig

Homework: 1. Finish Lab

2. Sig FIg Worksheet due Friday

Body : Today in class Mr. Paek went over the homework from last night. It is very important if you don't understand or unsure of anything to go see Mr. Paek to receive help. Tomorrow the class will be taking a Lab quiz. Lab Quizzes are something Mr.Paek gives before a Test to see how your doing on the material in class, it also tells you where your at as well so you know if you should be studying more or not.

Data for Measurement Lab 2

Part 1

2. Mass = 27.06cm, Length= 6.12cm, Width= 1.19cm, Height= 6.12

PART 2

4. mass=1.469, volume of water=5 ml, volume + water object= 5.21

PART 3

10 ml graduated cylinder 100 ml graduated cylinder

initial mass of empty cylinder 29.18 g 137.344 g

final mass of cylinder + liquid 32.139 169.2

volume of liquid 3 33

And the next Scribe will be.........Katrina

9/01/11

Announcements: Quiz tomorrow (9/2)

Homework: Measurement 3-6, Lab due Friday (9/2), Measurement lab questions

Overview: Today in class we got started on Measurement Lab 1. We grabbed a meter stick, a ruler, a metal bar, a paper clip, a pencil, a nail, and a plastic brick. We measured our height in meters, did some conversion with m-km and for every km, there are 100m. We then measured the square/rectangular object's dimensions and recored each measurement and multiplied each side by each other and that gave us the volume which is always followed by the units (cubed). We then took out the graduated cylinders and found the volume of things that are harder to find like the nail. Finally we used the electronic scales in the back to measure the mass of each object.

And the next scribe will be........Sean G

August 26- The First Friday and a Lab Begins

Announcements- Bring/Buy Googles if you haven't done it yet

Homework- None

Overview:

The first Friday of the 2011-2012 school year starts of with notes and then a BANG. We started of taking notes on basic science that most of us learned in 8th grade. For example, variables and basic experiment proceeder. We taped in all seven of our note pages for the unit and then took some extra notes on specific variables.

Independent- the variable that experimenter is changing (light, temperature, location, ext.)

Dependent- the variable that can be measured (distance, health, size, ext.)

Control- the elements in the experiment that stay the same and stay constant

After notes we started an experiment that nearly gave me a heart attack. We added seltzer tablets to film canisters filled with water. The tablets created gas bubbles and if the seal of the canister we tight then when the bubbles built up the canister popped. It was quiet scary and we made many dents in the ceiling.

The next scribe will be .................... Izzy R.!! Wooh!