Final Exams

Hi folks,

I forgot to mention that I'll be happy to send you the final exams if you wish.  Just let me know and send me have your mailing address and I'll send them out next week.  (I'm on vacation until this coming Sunday.)

I hope you're all having a wonderfilled summer!

Never Stop Wondering

"Science Jim"  Mueller

(919) 929-9791

A Fun Approach to Serious Physics!

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End of Year Chemistry Syllabus

Hi folks,

I've enclosed a full overview of everything we covered in this year's chemistry class.

No homework for Science Jim's Classes this week!

Hi folks,

No homework for biology and chemistry this week.  Just study study study.  Best way to do it is to look over ALL those old quizzes.  The test will be based on the old quizzes and anything that's on those quizzes is fair game for the final.  I'm trying to make the final about 1.5 hours long so you may want to have a ride on call in case you finish early.

If you have any questions you want help with don't hesitate to let me know.

Here is the biology blog if you want to look over old recordings or assignments.

Here is the chemistry blog if you want to look over old recordings or assignments.

Good luck everyone!

5/18 Chemistry Recording

Way to go, ScienceJim! Your video's now on YouTube. Chemistry 5/17 Want to spread the word about your newest videos? Share your video We've sent this email to Sciencejim@gmail.com. You can unsubscribe from notifications for finished uploads by visiting Email Preferences. ©2013 YouTube, LLC 901 Cherry Ave, San Bruno, CA 94066

Bit of help with this week's homework

Another thing to look at for this week's homework is electroplating. This may help explain what's happening to the paperclip...or...it may not... :) It's up to you to come up with logical explanations to explain what observations you made during the experiment. Good luck!

Recording of 5/10 Chemistry Class

http://www.youtube.com/watch?v=DhxnPquccnA&feature=em-upload_owner

Review

Hi folks,

This would be a good week to spend some time looking over old quizzes.  Are there any problems or concepts that you are struggling with?  If so, bring them to class.  We can spend some time working through the problems.  Stoichiometry, heat calculations, balancing, naming etc.  It'll all be on the final so now's a good time to take a look to see if you need some help.

Never Stop Wondering

"Science Jim"  Mueller

(919) 929-9791

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5/10 Chemistry Update and Homework Due 5/17

Hi folks,

Today was a busy day with two labs and a discussion of reaction rates and endothermic vs. exothermic reactions.  We took a look at just how much water, salt and sugar is in a mole and we also did electrolysis, one of my favorite labs.

Homework for next week is to:

Read pgs. 279 - 300 Don't worry about the #'s and the math.

Investigate electrolysis and create a report telling me:

1. The chemical reactions taking place within the experiment.

2. Why do you think the water changed color?

3. What do you think happened to the paper clip?

4. What do you think happened to the water in the test tube?

5. Why did we need the battery?

6. Why did we need to use salt water?

Never Stop Wondering

"Science Jim"  Mueller

(919) 929-9791

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4/3 Chemistry update and homework due 4/10

Hi folks,

Today we did a rather wacky lab to try to get a better feel for chemical equations and the concept of stoichiometry. No recording this week since we just did the lab for the entire class.

Homework for next week:
Most of you finished some of this in class but I'd like you to hand in...

1. How many moles of borax did you use?

2. How many moles of glue did you use?

3. How many moles of water did you use?

4. If you wanted to create 1000g of silly putty, (and we all do) how many moles of Borax would you need?

5. How many moles of water would you need?

6. How many moles of glue would you need?

7. If you wanted to create 1000g of silly putty, how many grams of Borax would you need?

8. How many grams of water?

9. How many grams of glue?

(You read about these laws way back in January. They are in chapter 3 if you need review.)
10. This experiment is also a great example of the Law of Conservation of Mass. Tell my why it's such a great example.

11. Not only is it a good example of the Law of Conservation of Mass but it's also a great example of the Law of Definite Proportions. How does this experiment illustrate the law of Definite Proportions?

Recording for 4/26 Chemistry class

Here's the recording for 4/26.

http://www.youtube.com/watch?v=w7rs4MuFLHY

Extra Credit for Chemistry

Hi folks,

A small extra credit opportunity here for you.  5 points if you can figure out what the common "I can get this at the store" items are for the chemical formulas in this grocery list.  I must admit, I'm not sure what #5 is either so you can skip that if you want.  Good Luck!

Change of classroom space

Hi folks,

I'm sorry for the confusion before.  ALL classes will be held at this location from now on.  Sorry that that wasn't clear.

Never Stop Wondering

"Science Jim"  Mueller

(919) 929-9791

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New Location for Biology!!!

Hi folks,

Remember that location that fell through for us earlier in the year?  Well it's available now and I'd like to start using it for classes this week.

The location is at 6901 Turkey Farm Road Chapel Hill,  NC 27514.  It's on the way to my house but you take a left on Turkey Farm road (assuming you're coming from 86) and it's about 500 ft on the left hand side.

I hope this doesn't cause any inconvenience.  See you all soon!

Never Stop Wondering

"Science Jim"  Mueller

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4/26 chemistry update and homework due 5/3

Hi folks,

Last week we spent time getting deeper into moles and talking a look at stoichiometry. It's quite intimidating at first but hopefully it will be easier with practice.

Homework this week:

Do questions 5-8 on the enclosed .pdf. Check your answers carefully and really try to get comfortable with this.

Re: 4/19 Chemistry update and homework due 4/26

Hi folks, 

Karan caught a typo.  In the second question #5 on the "Complete and Balance" sheet BaCl should be BaCl2.  Sorry folks and good job Karan!

Never Stop Wondering

"Science Jim"  Mueller

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On Apr 24, 2013, at 11:48 PM, Karan Ravi wrote:

Is number 5(second number 5) balanced?  The answer  shows 1 'Cl'  on the left side and 2 'Cl' s on the right side.

On Apr 21, 2013 9:54 PM, "Jim Mueller" <jim@bitesizephysics.com> wrote:

Hi folks,

Today we covered three topics.  The 5 different types of chemical reactions, how to predict reactants from products and we began working with moles.

Homework for this week is to do the enclosed two question sheets.  Both have answers so that you can check your stuff and really get the hang of this.  Really try to get comfortable with the mole concept.   We are going to be doing quite a bit with that in the next class or two and the more comfortable you are with it now, the easier it will be.

Recording of 4/19 chemistry class

Hi folks,

Here's the recording of the 4/19 chemistry class.
http://www.youtube.com/watch?v=0n6DVImFVzk&feature=youtu.be

4/19 Chemistry update and homework due 4/26

Hi folks,

Today we covered three topics. The 5 different types of chemical reactions, how to predict reactants from products and we began working with moles.

Homework for this week is to do the enclosed two question sheets. Both have answers so that you can check your stuff and really get the hang of this. Really try to get comfortable with the mole concept. We are going to be doing quite a bit with that in the next class or two and the more comfortable you are with it now, the easier it will be.

Recording of 4/12 Chemistry Class

Here's the recording of the 4/12 Chemistry class.

http://www.youtube.com/watch?v=3XliJjhoqZ0

4/12 Chemistry update and Homework due 4/19

Hi folks,

Today we reviewed naming a bit more and started working with balancing chemical equations.

Homework for this week is to do the following .pdf. Answers are included (good ones this time :) ) so that you can check your answers.

Home work sheet

Hi folks,

I missed the fact that the sheet has a bunch of polyatomic ions that I didn't ask you guys to memorize.  When you come to the problems with those, either (a) google them or (b) skip them.

Sorry about the frustration on that.

Never Stop Wondering

"Science Jim"  Mueller

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Re: 4/4 Chemistry update and homework due 4/11

On Apr 11, 2013, at 10:47 PM, Gideon Chickos wrote:

Other problems that aren't in the answers:

#15 Lead Phosphite?

#16 What is Heptoxide? 

Don't worry about Phosphite.  It's H3PO3 but I didn't ask you to know that one.

Heptoxide is O7 Another strange question.  Heptoxide doesn't stand on it's own it's always with something.  Like, dichlorine heptoxide.  Cl2O7

On Thu, Apr 11, 2013 at 10:46 PM, Jim Mueller <jim@bitesizephysics.com> wrote:

Yes, that works too.  Iodide would be a common name but diiodide would be more accurate.

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On Apr 11, 2013, at 10:28 PM, Gideon Chickos wrote:

It wouldn't be like Diiodide? 

On Thu, Apr 11, 2013 at 10:26 PM, Jim Mueller <jim@bitesizephysics.com> wrote:

Wow, that's wild.

OK so

#5 FeSO4 would be Iron (II) Sulfate

#12 Cu2S would be Copper (I) Sulfide

#14 I2 would just be Iodide.

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"Science Jim"  Mueller

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On Apr 11, 2013, at 10:19 PM, Gideon Chickos wrote:

I can't find anything for #5 (FeSO4) or #12 (Cu2S) or #14 (I2) And I believe there are others. Do you have answers for those?

On Thu, Apr 11, 2013 at 10:15 PM, Jim Mueller <jim@bitesizephysics.com> wrote:

There are answers missing?

Never Stop Wondering

"Science Jim"  Mueller

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On Apr 11, 2013, at 10:11 PM, Gideon Chickos wrote:

Hey Jim,

I'm not even sure that you're going to get this in time,

I'm doing this week's chem HW a little late because I was really busy this week. There seem to be a lot of answers missing from my worksheet, And I also have a weird question about ionic bonds...but I'll ask about that tomorrow I guess.

Thanks, 

Gid. 

On Sun, Apr 7, 2013 at 12:38 PM, Jim Mueller <jim@bitesizephysics.com> wrote:

Hi folks,

Today we've taken all our wonderful knowledge of atoms, charges, and bonding and took it to the next step of naming molecules.  

Homework this week is to practice what we did in class.

This website does a nice job going over the steps on how to name molecules an how to create the formulas for the molecules from the names.   We didn't get to create the formulas from the names in class last week but give it a shot and see if you can do it.

Homework this week is to complete the enclosed worksheet.   Answers are included so that you can check your work and see if you are getting the hang of it.   Please don't cheat yourself by looking at the answers before doing the problems.  This will definitely be on the quiz next week so be sure to try to get it down pat.  Also, don't forget to memorize the elements and polyatomic ions I asked you to memorize.  That is also coming to a quiz near you soon!

--

Gideon M. Chickos

(919)-530-9231

gchickos@gmail.com

 

 

 

--

Gideon M. Chickos

(919)-530-9231

gchickos@gmail.com

 

 

 

--

Gideon M. Chickos

(919)-530-9231

gchickos@gmail.com

 

 

 

--

Gideon M. Chickos

(919)-530-9231

gchickos@gmail.com

 

 

 

Problem with the homework's answer key

Hi folks,

It turns out that the answer key to this weeks homework is a little odd.  Some of the answers have nothing to do with the problems.  Here are some corrections that Gideon was asking about.

#5 FeSO4 would be Iron (II) Sulfate

#12 Cu2S would be Copper (I) Sulfide

#14 I2 would just be Iodide.

Let me know if you guys need help with any others.  I'm running quite a bit tomorrow but I'll try to help.

Never Stop Wondering

"Science Jim"  Mueller

(919) 929-9791

A Fun Approach to Serious Physics!

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4/4 Chemistry update and homework due 4/11

Hi folks,

Today we've taken all our wonderful knowledge of atoms, charges, and bonding and took it to the next step of naming molecules.  

Homework this week is to practice what we did in class.

This website does a nice job going over the steps on how to name molecules an how to create the formulas for the molecules from the names.   We didn't get to create the formulas from the names in class last week but give it a shot and see if you can do it.

Homework this week is to complete the enclosed worksheet.   Answers are included so that you can check your work and see if you are getting the hang of it.   Please don't cheat yourself by looking at the answers before doing the problems.  This will definitely be on the quiz next week so be sure to try to get it down pat.  Also, don't forget to memorize the elements and polyatomic ions I asked you to memorize.  That is also coming to a quiz near you soon!

Recording of 4/4 Chemistry Class

Hi folks,

Here's the recording of our April 4 class.

http://www.youtube.com/watch?v=vKBTsjFBHsI&feature=youtu.be

No Class This Friday

Hi folks,

Just a reminder, no Chemistry class this Friday but we will be meeting next Friday April 4.

Never Stop Wondering

"Science Jim"  Mueller

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Video for 3/23 Chemistry

Here's the recording link for for the 3/23 class.
http://www.youtube.com/watch?v=vAsu3JSavWc

No Class next week (3/29) but there is Class April 5th

Hi folks,

We are going to skip class next Friday for Good Friday but we will have class on April 5th to make up for that snow day we had earlier in the year.  

I apologize if this causes any inconvenience for anyone.

Never Stop Wondering

"Science Jim"  Mueller

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3/22 Chemistry update and Homework due 4/5

Hi folks,

Today we started figuring out quantum electron configuration.  It's quite confusing and strange so we warped a brain or two along the way.  :)

If you want more information on this you may want to take a look at Khan Academy.  

We will be reviewing and working with this more next class so if you just feel plain lost we'll be doing more with it soon.

For homework this week, 

Read your text pgs. 146 - 159.

I also want you to practice doing some configurations.  Do the enclosed worksheet .pdf.

This thing is huge so don't do all of it.  

Do questions:

1-5

11-15

21-36

45

46 a - d

48 a - f

To check your answers, feel free to use this website   Click on the orbitals tab and just scroll over the atoms you're looking for.  Remember, please for your own good grades, check your answers only!!!!

Good Luck!

Chemical Symbol Typo

Hi folks,

Sorry, there's a typo on the list of element I want you guys to memorize.  Ci should be Cl, Chlorine.

Thanks to Greta and Karan for catching that.

Never Stop Wondering

"Science Jim"  Mueller

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On Mar 19, 2013, at 12:20 PM, Karan Ravi wrote:

Which element is "Ci"? I cant find it anywhere on the periodic table

On Mar 18, 2013 1:19 PM, "Jim Mueller" <jim@bitesizephysics.com> wrote:

Hi folks,

Today we discussed some of the trends on the periodic table.  Electronegativity, Radius, Ionization Energy, and Metallic Nature.  

We also covered the methods atoms can bond to one another, covalent, metallic and ionic.

Homework for this week is to:

Read 173 - 186

Do questions starting on pg 200

Odd #'s 1 - 23

Memorize the following chemical symbols and the elements they represent.  I highly recommend making flash cards for this.

H He Li C N O NA Mg Al S Cl K Ca Fe Ci Zn Si Au Sn Hg Pb

These are common polyatomic ions.  Memorize these and their charges.

-1 Charge

Hydrogen Sulfite HSO3-

Hydrogen Sulfate HSO4-

Nitrite NO2-

Nitrate NO3-

Hydroxide OH-

-2 Charge

Sulfite SO32-

Sulfate SO42-

Carbonate CO32-

+1 Charge

Ammonium NH4+

Never Stop Wondering

"Science Jim"  Mueller

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Recording of 3/15 Class

Hi folks,

Here's the recording of the 3/15 class.

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

3/15 Chemistry update and homework due 3/22

Hi folks,

Today we discussed some of the trends on the periodic table.  Electronegativity, Radius, Ionization Energy, and Metallic Nature.  

We also covered the methods atoms can bond to one another, covalent, metallic and ionic.

Homework for this week is to:

Read 173 - 186

Do questions starting on pg 200

Odd #'s 1 - 23

Memorize the following chemical symbols and the elements they represent.  I highly recommend making flash cards for this.

H He Li C N O NA Mg Al S Cl K Ca Fe Ci Zn Si Au Sn Hg Pb

These are common polyatomic ions.  Memorize these and their charges.

-1 Charge

Hydrogen Sulfite HSO3-

Hydrogen Sulfate HSO4-

Nitrite NO2-

Nitrate NO3-

Hydroxide OH-

-2 Charge

Sulfite SO32-

Sulfate SO42-

Carbonate CO32-

+1 Charge

Ammonium NH4+

Never Stop Wondering

"Science Jim"  Mueller

(919) 929-9791

A Fun Approach to Serious Physics!

Sciencejim

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Recording of 3- 8 Class

Here are the recordings from last week's class.

Chemistry 3/8 #1 http://youtu.be/S94NTYKBaRA

Chemistry 3/8 #2 http://youtu.be/ODDU7LzWfYo

3-8 chemistry update and homework due 3/15

Hi folks,

Today we basically took the time to summarize what we've been working on the past 3 weeks. The periodic table, electrons, diagraming atoms, electron configurations and creating molecules. The information from the past 3 weeks is absolutely vital to the rest of the year as it will continue to be built on as we move forward. Please make sure you feel comfortable with this information.

Homework this week is to complete the enclosed .pdf. It's a (hopefully) fun activity that will give you a deeper understanding of the periodic table and its structure. Below are a few hints to help you out. (Stuff we haven't covered in class yet.)

Hints:

In #5 it talks about the most metallic element. The elements to the bottom left of the periodic table are the most metallic. For example, for us, Francium is the most metallic metal. The closer an atom is to the bottom left the more metallic it will be.

Chemically active non-metals are to the upper left of the periodic table. So for us fluorine is the most active non- metal. The closer an atom is to the top right the more active it will be. Active means eager to bond with other metals.

10. An atom is diatomic if it pairs of atoms form a stable molecule. For example, O2 is a stable gas. H2 is a stable gas.

Good Luck!!!

3rd Session has begun

Hi folks,

Just a reminder for some that that 3rd session of classes has begun and payments are due.  Thanks everyone!

Never Stop Wondering

"Science Jim"  Mueller

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Recording for 3/1 Chemistry Class

Here's the recording for the 3/1 class.

http://www.youtube.com/watch?v=Whgt8PrGn40

pdf for homework due 3/8

Hi folks,

Sorry about that, I forgot to included the .pdf. Here you go.

3/1 Chemistry update and homework due 3/8

Hi folks,

This week we got even deeper into the periodic table as we looked at how to use it to tell us about valence electrons and the number of bonds an atom may have.  We also began looking at how atoms bond to form molecules.

Homework this week is to: 

Read the text pgs. 57 - 62

 

Do questions on page 64

9 - 14 and 23 - 34

Complete the enclosed .pdf.  The answers are included so that you can check your answers and see if you're getting the hang of it!!! This material will be on the quiz next week so really work to see if you can get a hold of this.

Recording of 2/15 Chemistry Lecture

Hi folks,

Sorry this took so long to get up to the web.  I left for vacation Saturday morn and the internet where I was was lousy.

Here are the links

Part 1http://youtu.be/y19p1lMbhPw

Part 2 http://youtu.be/K2ihkOF4hKk

Part 3 http://youtu.be/6o2Vg82hCxE

No Science Jim Classes this week

Hi folks,

Just a reminder, (it was on the original schedule) that there are no Science Jim classes the week of Feb. 18 to the 22nd.  

Have a great week everyone!

Never Stop Wondering

"Science Jim"  Mueller

(919) 929-9791

A Fun Approach to Serious Physics!

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2/15 Chemistry update and homework due 3/1

Hi folks,

Today we discussed a few basic chemistry terms and began getting into the Bohr model of the atom.  We diagrammed several different atoms and saw the relationship of groups, periods and electron configuration.  We'll do more with this next class.

Homework for this week is to:

Read pgs 37 - 62

Answer questions on pg. 64 #'s 1-8 & 15 - 22

Never Stop Wondering

"Science Jim"  Mueller

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Chemistry Lecture 2/8

Hi folks,

Here's the chemistry lecture for 2/8 We did a lab at the beginning of class so the lecture is shorter then usual.

Part 1 http://www.youtube.com/watch?v=AmTymwJVUmI&feature=youtu.be
Part 2 http://www.youtube.com/watch?v=Ux-i-p5Jp-A&feature=youtu.be

2/8 Chemistry update and homework due 2/15

Hi folks,

Today we did a quick lab looking at how iron combines with oxygen to form Fe2O3, other wise known as rust. This took us into a discussion of the law of conservation of mass, which led to talking about the history of chemistry and the development of modern atomic theory.

Homework this week is to:
Read 69 - 93
Do all odd questions on pg's 94 and 95.

10 points of extra credit for any of the Hands-on Chemistry Insights.

Recording of 2/1 Chemistry class

Hi folks,  

Here's the recording of the 2/1 class.

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

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"Science Jim"  Mueller

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2/1 Chemistry update and homework due 2/8

Hi folks,

Kind of a fun lecture today looking into just how strange and bizarre the atom really is.  I hope I blew your minds a little bit. : )

Homework for this week should also be fun.  Take a look at this website http://phet.colorado.edu/en/simulation/build-an-atom.  Click on "download" to get the simulation.  Once it's all set, feel free to play with it a bit.  When you're ready, click on the "Games" tab in the upper left side.  Feel free to do all 4 levels but at least do levels 3 and 4.  Something a little tricky here is that, when they show the element symbol, the atomic number is in the lower left side and the atomic weight is in the upper left.  The ionic charge is in the upper right side.  Keep trying until you get at least 4 out of 5 correct.  There's really nothing to turn in so you're on your honor to give it a shot.  Good Luck!

Never Stop Wondering

"Science Jim"  Mueller

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1/19 Chemistry update and homework due 1/26

Hi folks,

Today we have left our discussion of energy and chemistry and begun our investigation of matter and chemistry.  We began by taking a look at the very basic building block of the universe, the atom.  Today we covered the basic structure of the atom, ions, isotopes and the very beginning of understanding the periodic table.

My favorite online periodic table is here http://www.ptable.com/.  Feel free to use it for this week's homework.

The recording of today's lecture is here. 

The homework due 1/26 is to do the enclosed .pdf.

1/11 Chemistry update and homework due 1/18

Hi folks,

Today we basically did a "practicum" where we took what we have learned about heat transfer and put it to the test by creating "thermoses" too keep water as hot as possible for as long as possible.  I did not shoot any video today since the entire day was basically lab work.  Using styrofoam, aluminum foil, plastic wrap and more, the task was to create a device that let as little heat out as possible.  The students had to do whatever they could to avoid heat escaping by the three methods of heat transfer.

Homework for 1/18

1.  Actually DO the assignment from last week where you were to look at 4 coffee mugs/thermoses and analyze them for plusses and minuses as far as the three methods of heat transfer goes.  Basically use the same technique you used today when you analyzed my coffee mug.

1.b. Take a look at a cooler.  A cooler's job is to keep heat from getting into it and warming up the contents within.  Analyze a cooler according to the 3 methods of heat transfer.

2.  Write up what you did today in class.  What were your thought processes as you put together your thermos.  What did you do the try to keep heat from escaping?   Be sure to apply all three of the methods of heat transfer to your answer.

3.  Calculate how much heat was lost in 10 minutes.  Use 100g for the mass of the water and 12 C for change in temp.  (if you can remember your actual delta T please feel free to use that instead).

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"Science Jim"  Mueller

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Jan 4 Chemistry update and homework due 1/11

Hi folks,

Today we talked about heat transfer.  The three different ways heat can move from one source to another.

I've included a chapter from my Bite-Size Physics book for homework this week.  Please read the chapter and complete the questions at the end.  (Please, don't look at the answers until you're done with the questions.)

Also for homework, take a look at four thermoses and/or travel coffee mugs.  The job of thermoses/coffee mugs is to not allow heat to transfer out of the drink.  Analyze each of the 4 thermoses/coffee cups in relation to all three different methods of heat transfer.  Some things to think about:

Conduction: Wiggle and bump.  Metals conduct well.  So you don't want metals next to your liquids, it will drain the heat right out of them.  Plastics, styrofoam, glass etc. do not conduct well, so those are better options.  

Convection: This is fluid moving right?  So the key to keeping conduction to a minimum, is to try to keep air movement to a minimum.  You want to have as little air as possible to move around the liquid.  Keeping the thermoses/coffee mugs as full as possible is good and even more important is to have a good lid. 

Radiation: In this case, the heat will leave the same way heat leaves your hands, by electromagnetic waves.  You don't want anything to absorb those rays so light or reflective surfaces are best to have next to your liquids.

Some more things to think about and answer in your thermos/coffee mug essay.

Some thermoses are "vacuum sealed".  Why?  

Is the outside surface of the thermos/coffee mug important as far as heat transfer goes?  (The heat from the liquid is going into the mug...where does it go then?)

What does heat capacity have to do with the materials that a thermos/coffee mug is made of?

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"Science Jim"  Mueller

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