12/21 Chemistry Class

Hi folks,

Well today we introduced the concept of the mole.  We will be doing a LOT more with this as we move on.  We also did a small lab where we found the amounts of different substances using the concept of the mole.

For homework….there is none!  Hooray!  However, I am included a folder that has all of the quizzes we've done so far this year.  I HIGHLY recommend going over each quiz and retaking anything you may be shaky on and, to be honest, I'd would recommend just doing them all from scratch.  Check your answers with your old quizzes.  From here on out, we will be using everything we've done before as a base so if you're iffy on any of these concepts the next part of the year will be tricky.  Take the time to really master this material.  If you do, the rest of the year will be much easier and your grades will be much better.

Have a great set of holidays everyone!!!

12/14 Chemistry Recording - Naming, Equations, Molar Mass and Types of Equations

https://youtu.be/vrImUXZ4sMk

12/14 Chemistry Update and homework due 12/21

Hi folks,

First we spent a bit of time reviewing naming and balancing equations.  After that, we learned how to find the molar mass of molecules and we learned 5 different reaction classifications.

For homework this week, do the enclosed .pdf AND answer the following questions.  Answers at the bottom.

Find the molar of the following molecules.

1.  NaBr

2.  C5H9O

3.  Al(OH)3

4.  Fe(C5H5)2

5. How many atoms are in  Fe(C5H5)2

12/7 Chemistry Class update and homework due 12/14

Hi folks,

Today we spent a bit of time reviewing naming molecules.
We also began the next part of our "language of Chemistry" block and that is to learn how to read and write sentences. In other words, to learn how to read, write and balance chemical equations.

All of this is foundation for everything else that is going to follow so please take the time to really feel good about all of the material we've been covering in the past few weeks.

Homework for this week is to do the enclosed .pdf. The answers are enclosed so that you can really quiz yourself and get this material down pat.

Also, you may want to take a look at this website. It's the same one you used for the atom game a while back. It takes a bit to get the hang of what you are supposed to do but it may help to make things clearer.

12/7 Chemistry Recording - Naming Review and Equations

https://youtu.be/_iEwS3bGq_w

Fwd: 11/15 Chemistry Update and homework due 11/22

Hi folks,

Today, we worked on the next part of the chemistry language and that is to be able to read and write the names of molecules.  We learned to name ionic and covalent molecules as well as polyatomic ions.

Homework for this week is to fill out the enclosed .pdf's.  I've also included the answer sheet so that you can check your answers.

11/30 Chemistry Recording - Naming Molecules

https://youtu.be/IYaPtoemu9k

11/16 Chemistry Recording - Quantum Configuration

https://youtu.be/Y9O1rbdw1C0

11/16 HS Chem update and homework due 11/30

Hi folks,

Today we spent time on one of the more confusing concepts of chemistry. The confusing concept of the quantum method of electron configuration. This is quite tricky since it is something that is very hard to visualize. Once you do a few, however, it gets fairly simple. I've included some pictures below of the different orbitals just for fun.  Homework this week will be to do quite a few of these configurations.

Homework due next class is to:
Without using the "shortcut" write the quantum electron configurations of
a. Na b. P c. Ar d. Rb e. Ru f. Sb g. Po  Feel free to use www.ptable.com to check your answers.  Click on the "orbitals" tab to see the configurations.  (Remember, some of your answers may be off due to the fact that the transition metals and the bottom two rows get a bit loose with the rules.)

Read Chapter 5 pgs.146-152
Answer Review Questions Pg 166 and 167 #'s 22 - 37

Last but not least MEMORIZE THOSE POLYATOMIC IONS AND THEIR CHARGES!!  This will serve you well as class goes one.

One last thing, there are two possibilities for extra credit at the moment.  You can read the book Disappearing Spoon by Sam Kean and you can also memorize and recite the periodic table.  You can do this any time this year to get 10 points of credit.

Science Class Information

Hi folks,

Just wanted to let you all know that this week will be a normal week but the following week (Nov. 19 - 23) we will be off due to the Thanksgiving Holiday.  I hope everyone has safe travels and marvelous meals!

Also, the end of the trimester is here so payments are due this week.

Best,

Jim Mueller

(919) 907-3217

Recording of 11/10 Chemistry Class - Molecules

https://youtu.be/H5k9oVQW6ng

11/9 Chemistry update and homework due 11/16

Hi folks,

Today we dove a bit deeper into the periodic table and began making "words" (molecules) with our knowledge of the period table.

Homework for this week is to:
Read Pages 133 - 146 in the text book
Do Review Questions on page 166 and 167 #'s 1- 21. Just do the odd #'s

Create stable molecules using the following atoms.
1. H with Cl
2. Mg and F
3. K with Br
4. Na with Cl
5. H with C
6. C with Cl
7. O and O
8. C and O
9. N and N
10. H and C and N
11. H and C and O

11/2 Chemistry update and homework due 11/9

Hi folks,

Today we got a bit deeper into the periodic tables and discussed three of the different trends that can be found in the periodic table.

For homework this week please do the enclosed .pdf.  Skip # 5. 

AND

Go to this website.  Click on game and play all 4 of the games provided.  When done, please take a picture or a screenshot of the finished games with at least 4 of the 5 stars  achieved for each game.  This is a little tricky because they use a different standard for the periodic table.  The atomic # is in the bottom left, the atomic mass is in the upper left and the charge is in the upper right.

Best,

Jim Mueller

(919) 907-3217

11/2 Chemistry Recording - Periodic Trends

https://youtu.be/8CsmM2k4IdQ

10/26 Chemistry Recording - Diagraming Atoms

https://youtu.be/qs2swfOW-TM

10/26 Chemistry update and homework due 11/2

Hi folks,

Today we continued our discussion on atoms and got quite a bit deeper into the periodic table and reading its patterns and trends.  This is the beginning of what will basically be a long and winding staircase of material.  It's very important to understand each "stair" well from here on out.  I've seen several students over the years get lost on one of the concepts and since each concept leads to the next one, all the concepts that follow are just that much harder to really understand.  In other words, really take your time on this material.

Homework for this week is to complete the following questions.


1. How many protons, neutrons and electrons are in the following atoms 

a. Aluminum 

b. Antimony 

c. Strontium 

d. Oxygen 

e. A positive ion of Gallium 

f. A negative ion of Barium 

2. Remember, the atomic weight of an atom is its protons plus its neutrons. With that in mind how many protons and neutrons are in the following atoms. Which ones would be isotopes? 

a. Arsenic atomic weight 75 

b. Phosphorus atomic weight 27 

c. Aluminum atomic weight 29 

3. Create a Bohr diagram for the following atoms. 


a. Lithium 





b. Barium 





c. Neon 





d. Radium




e. Argon 



f. Indium

4. Draw the shape of the periodic table and label: 
a. Non-metals 
b. transition metals 
c. halogens 
d. Alkali metals 
e. Alkali Earth metals 
g. Noble Gasses


Memorize the following atomic symbols and what they stand for: (Index cards would be great for this!) 

H, He, Li, C, N, O, Ne, Na, Mg, Al, Cl, Ar, K, Ca, Fe, Ni, Cu, Kr, Ag, Sn, Xe, Au, Hg, Pb, Rn, P

10/19 HS Chemistry recording - Introduction to the Periodic Table

https://youtu.be/0cu452LExqk 

10/19 Chemistry class update and homework due 10/26

Hi folks,

Today we began our study on the periodic table and the elements.  Next week we'll get more into even more detail about the atoms and the elements. 

If you'd like to take a look at a periodic table, here's the one we used in class today.

Homework due next week: 

Read the text book pages 89 - 92 

Do Review questions pg 95 #'s 27 - 34 
Do Exercise questions on pg. 98 #'s 28 - 31 and 33-34 
Do Problems on pg 98 #'s 3 and 4

10/12 Chemistry update and homework due 10/19

Hi folks,

Today we took a bit of time to look at a few density related problems and discuss how to tackle them.  Then we did a lab practicum.  I put together five different substances and the students had to figure out which substance was which by finding the densities of the substance.  It took a lot of patience and precision and on the whole the students did a great job.

Homework for next week is to do the enclosed worksheet.  I'll send along answers in a separate email so you can check yourself.  Please feel free to email me with questions on this.  Some of these are a little bit more than we've done in class and they may take some thought.  Just keep in mind what volume is, what mass is and that density is the amount of mass in a given volume.  By the way, skip #6. I've included the answers as well. Good luck!  

Answer key to homework due 10/12

10/5 Chem update and homework due 10/12

Hi folks,

Today we spent time learning about and measuring the densities of several different materials.  In the process, we also practiced our lab techniques.  

For homework this week read this website and do the enclosed .pdf.

9/28 HS Chem Recording - Density

https://youtu.be/z4H-44JHI1k

9/28 Chemistry class and homework due 10/5

Hi folks,

Today we worked on two areas of focus.  One, learning to measure with precision using measuring tape and graduated cylinders.  And two, working in two different ways to measure the volumes of various items.

Two different things for homework this week:

First, go to this website .

1. On the page of the website with the water containers and the large graduated cylinder,  I want you to attempt to fill the cylinder to the following amounts.  13.5, 17.5, 23.5 and 39.5 Once you think you've filled it to those amounts, click on the "read the measurement" button to check your answers.  Nothing to write/turn in here.  Just practice reading the instrument. To get this to work, you need to drag the water to the top of the cylinder and then click on it.  Hold down the "click" to fill the cylinder.  

2. On the next page with an interactive, (you'll see several different instruments and colors) enter in the measurements for each container.  Check your answers.  Please write your answers and turn them in.  Also, tell me which one of the four containers would you use to get the most precise measurements.

3. On the last page of the interactive, find the volume of the solid and write it down on paper to hand in as well.

ALSO:

Read pages 11-30 in the text book.

Do Review questions #'s 11 - 44

ALSO:

I've included the data table for today's measurements.  After class I went ahead and did an immersion of the different items myself.  My measurements seem to be a bit different from many of the others.  :)  So, please give me at least four different reasons why so many of our measurements could have been so far off.  Your statements can refer to either one or both of the measurement systems we used today.

Whitfield is fixed!

Hi folks,

Whatever was wrong with Whitfield road has been repaired.  Everything is back to normal.  (At least as far as that goes.  :)   )

Best,

Jim Mueller

(919) 907-3217

Recording of 9/21 Chemistry Class - Sig figs and Scientific notation

https://youtu.be/d-eDkXdgZ-I

9/21 Chemistry update and homework due 9/28

Hi folks,

Today we spent time going over some basic but important information dealing with using numbers in chemistry.  We discussed scientific notation, significant figures and how to add and multiply with them.

Homework due next week is to do the enclosed .pdf.

The page numbers are strange on this so do the problems on the page marked 55 in the upper right hand corner and the problems on the page marked 58 in the upper right hand corner.  Don't worry about page 54 unless you want more practice (never a bad idea). Again, feel free to check your answers when you're done.  Remember though, this will be on next week's quiz so be sure you know how to do these problems.  If you get something wrong in the homework, know why.  It may come back to haunt you on the quiz.

.

Road Closure at Caerus

Hi folks,

Just a heads up for everyone. Whitfield road has a long-term closure due to Florence.
It goes from 86 to Turkey Farm Road.

You can get in from Erwin Road or Sunrise Road east of the school.  I think you can also get in from the north if you take 86 to Mt. Sanai to Turkey Farm.  (You may need to go past a road closed sign that way.  I had to do that on Monday.)

Chem class tomorrow is CANCELLED

Hi folks,

I'm going to make the call and cancel class tomorrow. The winds and storms are looking like they may be pretty scary around class time.

Good luck everyone! I hope everyone will be safe, secure and comfortable all weekend.

Best,
Jim Mueller

Chemistry Class

Hi folks,

I was all prepared to write a "Class is Cancelled" email but I'm not too sure now. From the looks of the weather at the moment, it looks like Friday may just turn into a rainy/windy afternoon. I hope you don't mind, but I'm going to wait until tomorrow to make the call about class on Friday.

Please don't hesitate to let me know what you are thinking about the day. If you are sure you are not going to make it, please let me know.

Here's hoping the weather stays as "calm" as it appears at the moment.

Best,
Jim Mueller