Chemistry 4-27-12 Decomposition Pt. 2 & Single Replacement Reactions

CHEMISTRY: I missed you guys today! Sorry about the scratchy vodcast. How’s it going working with completing and balancing chemical reactions? Are you getting better at remembering how to write formulas? And how are you doing on memorizing the equations? And today you got a head start on the activity series. Good job!

Here’s a vodcast from today on the rest of decomposition (a couple of chem classes didn’t get all the way through) and all of single replacement. This makes 15 so far, so we’ll do the rest Monday! Careful though, don’t just memorize them. Make sure you can apply them as well. When you start to work any equation, first determine what type of reaction it is, then figure out what rule applies and follow it to determine the products. I believe in you! You can do it!!

Chemistry 4-26-12 Synthesis & Decomposition Reactions

CHEMISTRY: Wow! So that’s where the pretty light comes from! Great job on synthesis and decomposition reactions. We’ll finish decomposition tomorrow. Now go forth and practice what you learned! (The balancing equations part, not the playing with magnesium part!) πŸ™‚

UPDATE: Sorry the last vodcast had bad audio. Try this one and see if it works!

Hon Chemistry 4-20-12 Percent Yield

HON CHEMISTRY: Wow! Great lab results today! πŸ™‚

So here’s an old lecture on percent yield. It’s the last of the applications of stoichiometry problems. Lots easier that limiting reactants, I think. You realize what we’ve done… we’ve finished the chapter!!

Physics 4-17-12 Harmonics & Beats

PHYSICS: So why do instruments that are playing the same note sound so different? Here’s the lecture from Monday on harmonics & beats.

Have you ever seen sound? Here’s an applet you might be interested in checking out: The vOICe Java Applet. Click on the name, or it’s at http://www.seeingwithsound.com/javoice.htm You might have to update Java – I did.

Chemistry 4-17-12 Balancing Chemical Equations – Pt. 2

CHEMISTRY: Need some help balancing equations? Here’s day two of “How to write a balanced chemical equation.” And don’t forget – first, check and make sure you have the formulas written correctly. Then, if you can’t get the equation balanced, go back and check the formulas!! You can do this! πŸ™‚

Chemistry 4-16-12 Intro to Balancing Chemical Equations

CHEMISTRY: Okay, maybe balancing equations isn’t exactly like this, but….. Here are the introductory notes on balancing equations. Plus – a couple of examples for practice. And, did I mention practice, practice, practice?


flickr photo by Pink Sherbet Photography

Paper Chromatography Lab – CHANGE

CHEMISTRY: Hey guys, I’m going to have to make a change in our schedule. We are not going to do the Paper Chromatography lab tomorrow. We won’t do that lab until Thursday, so it doesn’t have to be written up until Thursday. Sorry about the late notice!


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flickr photo by ediamond

Hon Chemistry 4-12-12 Limiting Reactants

HON CHEMISTRY: Okay, really, it’s not the hardest thing you’ve ever done – you deal with limiting reactants in your life all the time. Now we’re just applying that same concept with chemical reactions! πŸ™‚ Here’s the lecture from limiting reactants. Help session?

UPDATE – I’ve changed the vodcast to one that hopefully works better for you. Let me know how it does.

flickr photo by muffytyrone

Chemistry Chapter 6 Review

high speedCHEMISTRY: Do you feel like you are under water with all that you have to do? Are you ready for the test tomorrow?!? Let me give you some hints about making out your own study suggestion sheet for the test.

Here’s a good place to start getting organized. Make a chart, a really big chart of “What I need to memorize,” “What I need to know how to do,” and “What I need to be able to apply/discuss.” Then start practicing the things you have have the list!! Practice is especially important on the “problem” like objectives such as Lewis structures, drawing ionic bonding, etc. I would also encourage you to make lists of possible discussion questions and then practice answering them for the test. If there are things you are unsure about, go back and watch parts of old vodcasts.

A great way to help you study is to use the “Visual Concepts” part of the online textbook for this chapter. It provides an oral and visual review back through the chapter and also has practice quizzes, etc. It is great! You can access this site by clicking here on the Chemistry Online Textbook or over on the right side of this page, or through Edline. The user name is csbec and the password is chemistry. (Both of these show up when you move the mouse over the online textbook link on Edline.)

And don’t forget that a great place to prctice dot notation and Lewis structures is at sciencegeek.net and practice the things from our chapter that are in the Unit 3 Review Activities. You get feedback right away to know if your answer is right or not, and that’s a good thing.

We’ve covered quite a lot in this chapter. God bless you as you study! I’ll be praying for you!!

flickr photo by f-l-e-x