Hon Chemistry 4-28-16 Ideal Gas Law

HON CHEMISTRY: I meant to post this picture earlier! How much fun can you have with a Sprite can? Wow! Did you have a heart attack? More importantly were you able to tell me why it did what it did? Think about words like steam, condensation, atmospheric pressure.

How’d you like putting the gas laws together in the ideal gas law today? Pretty cool, huh?!? Don’t forget to memorize R!

HW Update: The answer to 49c is 1.06 atm

Need help? Help session Friday morning, 7:20ish A.M.

Hon Chemistry 4-28-16 Ideal Gas Law from Tammy Skinner on Vimeo.

Chemistry 4-28-16 Reversible Reactions & Balancing Equations

CHEMISTRY: Happy Thursday! Okay, maybe balancing equations isn’t exactly like this, but…..

Here are the notes on reversible reactions, plus lots of practice from the balancing equations worksheets you’ve been working on. Let’s crank it up a notch tomorrow!!

Chemistry 4-28-16 Reversible Reactions & Balancing Equations from Tammy Skinner on Vimeo.

flickr photo by Pink Sherbet Photography

Hon Chemistry 4-27-16 Molar Volume of Gases & Gas Stoichiometry

HON CHEMISTRY: Okay, for the record, water balloons do not obey Avogadro’s Law, but gas balloons do! Equal volume balloons contain the same number of molecules. And how about the Gay-Lussac’s Law of Combining Volumes? Yay, more great conversion factors!! How are you doing with blending the old and the new?

Hon Chemistry 4-27-16 Molar Volume of Gases & Gas Stoichiometry from Tammy Skinner on Vimeo.

flickr photo by dmdzine

Chemistry 4-26-16 Describing Chemical Reactions

CHEMISTRY: So tell me again – how do you know if a chemical reaction has occurred? Here’s the lecture on the evidences of a chemical change and the intro to balancing chemical equations. Great to be back to chemistry!

I love what you did with the paper chromatography lab yesterday and today. Lab reports, including your pictures of your will be due Saturday midnight. Note the change – you won’t be drawing the results, instead you’ll take pictures of BOTH sets of chromatographs and BOTH sets of unknowns. Tomorrow, when you first get to class, take photos of your chromatographs with a ruler laying beside them so you can also your results at home for your observation. Be sure your initials are on everything!!

BTW – Here are links to the videos from today if you want to learn more!

Fluorine Reactions
Blue Flame Thrower – Diethylzinc

Chemistry 4-26-16 Describing Chemical Reactions from Tammy Skinner on Vimeo.

Image source: periodicvideos.com

Hon Chemistry 4-25-16 Gas Laws

HON CHEMISTRY: Here’s our look at the gas laws today: Boyle’s law, Charles Law, Gay-Lussac’s law, and the combined gas law. Thank you, Millie, for being “guest writer” today! These gas law guys did great work – and you’ve got to love their hair!! Can you apply what they discovered in everyday situations?

Be sure you use Kelvin in the problems – not Celcius. And make double dog sure you use the formulas correctly! Rearrange that thing – no plug and play!! Here are answers from tonight’s homework:

20.) 121 K or -152°C
21.)142 mL
22.) 0.360 atm
23.) 3.41 L
24.) 127°C
25.) 38.8 kPa
32.) -43°C
33.) 9.98 m3/day
60.) 2.18 L

Hon Chemistry 4-25-16 Gas Laws from Tammy Skinner on Vimeo.

flickr photo by wine me up

Chemistry Chapter 6 Overview

CHEMISTRY: Do you feel like you are under water with all that you have to do? Are you ready for the test Friday?!? Click below for the test overview from today.

Let me give you some hints about making out your own study suggestion sheet for the test. First start by getting organized. If you didn’t do it in class today, 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!!

Chemistry Chapter 6 Review from Tammy Skinner on Vimeo.

flickr photo by f-l-e-x

Physics 4-19-16 Refraction, Pt. 2

PHYSICS: Here’s the lecture from tuesday on refraction, critical angles and total internal reflection. So…..did you find it? What color is a polar bear?

Change in plans – we’re going to play a bit with refraction tomorrow. We’ll do thin lenses Monday when we get back from Six Flags!

Physics 4-19-16 Refraction, Pt. 2 from Tammy Skinner on Vimeo.

Physics 4-18-16 Refraction

PHYSICS: Hey guys, you did such a great job with the reflection of light, let’s take it one step further! How about the refraction of light? Wait – light can bend???

Here’s the lecture from last Monday on our beginning discussion of refraction. More great stuff tomorrow!

Physics 4-18-16 Refraction from Tammy Skinner on Vimeo.

Chemistry 4-18-16 Intermolecular Forces

CHEMISTRY: Well, here it is, for Monday, the very last lecture from chapter 6 – intermolecular forces. (Don’t forget they’re also called van der Waals forces!) Tons of application, from bugs walking on water to little fishes breathing dissolved oxygen!

CHEMISTRY 4-7-15 Intermolecular Forces from Tammy Skinner on Vimeo.

Image source digitaljournal.com