Science Lab

Today Mrs. Mandarino told us that we could find worksheet pages one and two on moodle if we didn't have them already. We spent the class period in the science lab today also. In the science lab we did chemthink for atomic structures and ions. The only homework is to work on webassigns and chemthink(if not finished in class).





Owen Cole

Atomic Structure

Today Mrs. Mandarino gave us few minutes to finish up the Atomic Scientists worksheet, which we got it yesterday. And she also gave us progress reports including the grade of our lab test.

We started notes about Atomic Structure. There were notes about history of the atom and contribution to the Atomic Model.



Dalton Model of the Atom

-Late 1700's - John Dalton- England

Teacher- summarized results of his experiments and those other's

Combined ideas of elements with that of atom in Dalton's Atomic Theory



Thomson Model of the Atom

-J.J. Thomson- English physicist. 1897

Made a piece of equipment called a cathode ray tube.

It is a vacuum tube- all the air has been pumped out.



We did not get to Bohr's and Rutherford's notes yet.



At the last 10 minutes of clase, after taking some notes about Atomic Structure, we started Rutherford Simulation Lab. We didn't get to finish the lab.

HW: Read textbook pages 104-107 / W.A.

Black box lab & atomic theory greeks Dalton/Thomson

On Tuesday Mrs. Mandorino gave us approximately 2-4 minutes in completing the lab test. After finishing the lab tests we started on the black box lab. We had plenty of time to finish up the lab. Inside the obcertainer was an odd shaped or geometrical shape that caused the sphere to act abnormal. After the lab we read the green and pink sheet that talked about Dalton and Thomson. Finally we filled out the charts on the white sheet that corresponded to the pink and green sheets.

Dalton- experiment (analyzed the masses of substances that combined with one another.) Major contribution(The relative sizes and characters of atoms and how they fit together

Thomson- experiment(the ray in the tube was blocked from reaching positive, the positively-charged plate, when a object was placed in its path.)Major contribution(Electrons were universal, that matter somehow was built from them.)

Homework: Finish black box lab questions.

Anson.V

Tests back + Lab re-takes

Today in class we received our unit 1 tests back. We reviewed all of the answers as a class and then were given an updated grade report. Afterwords, we spent the remainder of class retaking a new written portion of the lab tests from Wednesday, (Sinking test tube lab) because apparently we all failed the first time.

Homework
-Read textbook page 101-106 & Webassign.
If you were absent or marked absent on Chem day you must make up the assignment.
-Make-up assignment for Chem Day is textbook p. 58 #36-53.

Chemistry Basics Review

In class on Tuesday, we first went over extra our  chemistry basics review worksheets. The questions from the review cover what will be on the test on Thursday. Some of the topics are:

• Particulate nature (see particulate nature tutorial if you are having trouble)
  -Remember diatomic atoms; hydrogen, oxygen, nitrogen, chlorine, bromine, iodine and flourine, or ClIF H BrON, or HONCl BrIF
• Physical or chemical changes that happen (notes are on moodle, also look at page 17 for help)
• Conversions/Metric system (notes are on moodle, and look at pages 1, 11 and12)
• Sig figs (notes are on moodle, and look at pages 3 and 4)
• Scientific notation (look at pages 5 and 6)
• Correctly reading/measuring data (look at page e2 or your measurement lab)

Physical or Chemical Stations

Today Mrs.Mandarino started yelling at us about how dirty the lab table was so we cleaned the lab tables. We also moved up our seats to the front. We went over the homework which was due long time ago(pg.16). We also went over page 17 and the lab we did on last friday. We got our quizes back to study for the test that's coming up.

Homework:
Review Chapters 1 and 2
Webassign, Chemthink

Atomic Level Pictures

Today well actually on thursday.
we learned difference between atom, molecule, element, compound.
atom: Most basic unit of matter
molecule: group of atoms held together by a chemical bond
element: made of a single type of atom
compound: molecules made up of more than 1 kind of atom

And also we learned atomic level pictures for each situations.
and learned how to write the formula for each atomic level pictures.

Chem Think

Today we went to the science lab for class. We went onto our student email to accept the invitation to the blog. Then we went to Chem Think and watched the tutorial for the section Particular Nature.We took notes on the tutorial then got started on the quiz based off that information. If it was not completed in class, then it is for homework along with finishing the Webassigns :)

More Conversion Factors.....

Tuesday, September 14, 2010

Today our day was slightly shorter than usual. We reviewed the homework of the previous night (on pg.11) and once again reviewed unit conversions. After that we started learning and talking about Atomic levels. We took notes on pg. 13. We covered the definitions of Atom, Molecule, element and compound. We also started to identify them given visual diagrams.

Homework:
Work on Webassigns
Josh

Quiz on Lab Tools, Metrics, Sig Figs and Density

Monday, September 13, 2010



Today as we walked in to class we picked up page 12 from the front desk. We then reviewed the scribe post from Friday on unit conversion factors. After that, we took our first quiz which was on lab tools, metrics, sig figs and density. We were also given an extra credit opportunity that involved recording the correct measurements of an index card and a post-it note. We were also told to find the volume of water that was in the graduated cylindar. Then we spent the rest of our time going over our homework on conversion factors.

Homework:
Page 12 "Unit Conversions Basic"
Work on Webassigns

More Density and Conversion Factors

Friday , September 10, 2010


Today we started class by reading the scibe post. We found that we needed to review density a bit more. Therefore Mrs. M went over the homework really thoroughly. We found that we have to read the questions carefully to determine what the question is and what is the given information. Sometimes it helps if we list out our information.
Mrs. M showed us how the density of a mehane bubble is less dense than air.  Before it reached the ceiling, Matt lit it on fire like the the college students in the below picture:

** NOTICE THAT THEY ARE NOT USING PROPER LAB SAFETY.  Can you see what they are doing wrong?

Next, we began conversion factors. We saw that when we are changing or converting one unit into another unit, we must be careful to place the values in the appropriate spots so that we can cancel out the unit that is not wanted. For example, when converting 127.5 inches into meters, notice the placement of the units.

127.5 in    x    2.54 cm     x       1 m      = 3.24 m
                         1 in              100. cm


We will work on conversion factors on Monday as well.

Homework:
Webassigns
Worksheet p.11
Study for quiz on Metrics, Sig Figs, and Density

Density

Wednesday, September 8, 2010

• Today we turned in our formal labs for the Alka Seltzer part 3.
• We then continued our discussion on scientific notation and density. On our homework, we saw that object 1 data was for a regular shaped object so we used length x width x height to determine the volume. Object 2 was a irregular shaped object so the data reflected a volume determined by water displacement.
• We then completed the first two sections of the density lab. Below are the objects we were given.

Remembering what we learned in the homework, we used L x W x H to determine the volume of the regular shaped object.

• We will finish the last part of the lab on Friday.

Homework
Continue working on webassigns. Not many people have started - Do not wait until the last minute!
Finish worksheet p. 8

Sig. Figs., Scientific Notation, & Density

September 7, 2010

Today in class, Mrs. Mandarino made sure that the whole class knew how to create and invite people to a Google Doc. There was no homework to check in today. Then for the rest of the class we worked on Sig Fig Rules and Scientific notation.


We finished up the Sig Fig Rule sheet in class today, reviewed scientific notation and learned that density is Mass over Volume. When dividing the numbers, remember to use proper sig figs.


We only started the Scientific worksheet and the rest of it was for homework, but we learned that if you have to go left to find the decimal point then your exponent wil be negative (I.E. 7.300 x 10^-5= .00007300) and if you move the decimal point to the right then your exponent will be positive.


The homework for today was to finish your Google Doc and either send it to Mrs. Mandarino or bring in a hard copy, work on webassigns and ws p. 5 & 6 #2.
 
Eric D.

Metrics & Significant Figures

September 3, 2010

Today in class, Teacher checked in our homework (notes and worksheet pages on Metrics and Measurements). Then we completed the following worksheet pages as a class.

We learned about the sig fig rules:

• Digits other than zero are always significant
• Zeros between non-zero digits are always significant
• Any final zero number used after a decimal point is significant
• Zeros used solely for spacing the decimal point are not significant.

Here is the homework: Friday, September 3,2010 =

1. Work on Formal Lab
2. Webassign- Expermental Design and Measurement and Sigfigs.

Chris J.

Metric System and Technology

September 2, 2010
Today in class we covered a decent amount.

Mrs. Mandarino started class by explaining Moodle to enhance our knowledge regarding it. Please use this as our home base. This page contains all of the necessary information on notes, assignments, labs, calendars, and homework. It also provides us with the necessary links for webassign, chemthink, etc.

After, we took notes about the Metric System (SI), and learned how it exactly functions.

• We learned that this is a base 10 metric system used all over the world.
• We can add prefixes to the base units. See notes for proper prefixes.
• We must measure correctly to get proper data. ie: always measure at the miniscus and always measure one value past the last marked value - make sure to notice the smallest markings on the lab equipment. This will improve accuracy and precision (significant digits).

Later on the projector we looked at graduated cylinders with liquid inside, and practiced measuring it, we also looked over the measurement lab which should now be finished.

In the final minutes of class we looked at how to sign in to WebAssign and ChemThink


Matt I

Lab Safety and Lab Techniques

Today in class we went over Lab Techniques. Lab Techniques are safety tips for experiments. (Sub today)
Some examples are:

1. Do not bring food or drink into the work station

2. Wear safety goggles at all times


Know where all the safety equipment is located too. (ex: Exits, Shower, Fume Hood, etc.)


We also learned about Lab Equipment. These are tools you use during your experiments.


These include:

1. Beakers

2. Thermometers



After we went over the Lab Equipment and Safety Worksheets, we watched a video on Lab Safety. (We didn't watch the second one because the sub wanted us to start our lab.)



Our lab was to try out the Lab Equipment. We didn't have time to finish it all.



Here is a video of one thing a group did with the equipment:




Homework:

Finish Lab Techs - Add 3 more safety rules

Moodle Video (How to Create a Google doc)



Megan D.