Hon Chemistry 3-31-17 Double Replacement & Combustion Reactions

Posted on March 31, 2017 by Ms. Skinner

HON CHEMISTRY: You realize what we did? We finished all 17 types of reactions today!

Careful when you work tonight’s homework! For all single replacement reactions and reactions involving forming or decomposing oxide, be sure and refer to the Activity Series. We’ll talk more about it after ExploreZone. Yes, you will get to memorize it!

Are you working on memorizing all 17 types of reactions?! But 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!! (and yes, I realize I am repeating myself, but I do and you can!)

Hon Chemistry 3-24-16 Double Replacement & Combustion Reactions from Tammy Skinner on Vimeo.

Chemistry 3-31-17 Ionic Bonds

Posted on March 31, 2017 by Ms. Skinner

CHEMISTRY: Isn’t this a beautiful crystal of copper sulfate pentahydrate? Since we’ve been talking about crystal lattice structures, I thought you might like to see something different than salt!

Here’s the lecture on ionic bonding and writing equations for ionic bonds. Remember, when you write ionic bonding, you’re not trying to arrange a single structure like you do with Lewis structures. Instead, you’re writing an equation that shows electrons being lost by one atom and gained by another atom. And make sure you put the dots in the right order!

Chemistry 4-9-16 Ionic Bonds from Tammy Skinner on Vimeo.

Hon Chemistry 3-30-17 Decomposition, Pt. 2 & Single Replacement Reactions

Posted on March 30, 2017 by Ms. Skinner

HON CHEMISTRY: Here’s our discussion on the rest of the decomposition and single replacement reactions – and you also got a head start on the activity series!

This makes 15 reactions so far, and we’ll do the rest tomorrow. 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!!

Hon Chemistry 3-22-16 Decomposition, Pt. 2 & Single Replacement Reactions from Tammy Skinner on Vimeo.

flickr photo by bobtravis

Chemistry 3-29-17 Polyatomic Ion HW & Intro to the cLAB

Posted on March 29, 2017 by Ms. Skinner

CHEMISTRY: From Wednesday, here’s a short review of some of the homework – polyatomic ions, and especially acetate, super important!! How about molecular geometry? Anyone need to review that? Help session?

Also, at the end of this vodcast we began discussing the cLAB: 3D Molecules. Great idea to review if you were absent!! We’ll work on the cLab again tomorrow in class. One update to the project: include a title “slide” with your name, period, date and title of the project – just like a lab.

Chemistry 4-5-16 Polyatomic Ion HW & Intro to the cLAB from Tammy Skinner on Vimeo.

Image source: moleview.org

Hon Chemistry 3-29-17 Synthesis Reactions & a Head Start on Decomposition

Posted on March 29, 2017 by Ms. Skinner

HON CHEMISTRY: Oooohhhh! So that’s where the pretty light comes from! Great job on synthesis reactions! Since we had no audio and I’m posting a lesson from last year, you also get a beginning on decomposition reactions! Now go forth and practice what you learned! (The balancing equations part, not the playing with magnesium part!) 🙂

Hon Chemistry 3-21-16 Synthesis Reactions & a Head Start on Decomposition from Tammy Skinner on Vimeo.

Physics 3-29-17 Waves

Posted on March 29, 2017 by Ms. Skinner

PHYSICS: Hey guys! Here’s our discussion on the properties of waves. Remember anything from your earlier 8th grade physical science days? Problems are pretty simple for you, I think. Do you remember the main formula from chemistry? Speed = wavelength x frequency (c = λf).

Easy peasy – and don’t forget the applications!

Physics 3-21-16 Waves from Tammy Skinner on Vimeo.

Chemistry 3-28-17 Polyatomic Ions & Molecular Geometry

Posted on March 28, 2017 by Ms. Skinner

CHEMISTRY: Great job with polyatomic ions and molecular geometry today! Who knew we’d be doing geometry in chemistry?!? No audio today, so I’ve found a lesson from last year, BUT start it at about 14 minutes.

For tomorrow, be sure and print and read the cLAB: 3D Molecules! Advice for Lewis structures – don’t forget to count the electrons! And then double check the number of electrons. And when you think it’s right, count the electrons!! 🙂

Advice for molecular geometry? Make sure you know how to draw Lewis structures, then determine the type of ABE structure and you’ve got it. Easy-peazy!

BONUS – kind of: At the beginning of this vodcast – til about 14 minutes, there are some questions and answers from last year about the project BUT it’s last year’s project. Still, some of the questions and answers might help!!

CHEMISTRY 4-4-16 Polyatomic Ions & Molecular Geometry from Tammy Skinner on Vimeo.

Hon Chemistry 3-28-17 Balancing Chemical Equations Practice

Posted on March 28, 2017 by Ms. Skinner

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

Great practice today! Do you feel better about balancing equations? No audio today, but here’s a recording from the past on the homework and balancing equations.

Hon Chemistry 3-27-15 Balancing Chemical Equations Practice from Tammy Skinner on Vimeo.

flickr photo by D. Sharon Pruitt, Pink Sherbet Photography

Chemistry 3-27-17 Resonance & Lewis Structure Practice

Posted on March 27, 2017 by Ms. Skinner

CHEMISTRY: Wow! Lewis structures, multiple bonds, and now resonance! That’s a lot you’ve conquered in the last couple of days!

Here’s some good advice – don’t take shortcuts. Learn the proper steps on the easier molecules, and you’ll be able to do the hard ones. And if it’s still all Greek to you, don’t worry! Keep practicing and you’ll get it, I promise!! Don’t forget to count electrons and don’t forget CONS!