Chemistry 4-13-18 Dipoles & Intermolecular Forces

CHEMISTRY: So why is molecular geometry important? Here’s the beginning of the answer! Great job on drawing dipoles. And thanks for helping me pick up all that water!

We’ll continue our discussion with intermolecular forces tomorrow, and also tackle ionic bonds!

flickr photo by grewlike

Chemistry 4-9-18 Molecular Geometry

CHEMISTRY: Great job with polyatomic ions and molecular geometry today! Who knew we’d be doing geometry in chemistry?!?

For tomorrow, be sure and print and read the cLAB: 3D Molecules! Also, getting a head start on the worksheet will save you some time tomorrow. 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!! πŸ™‚

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 16 minutes, there are some questions and answers about the Lost project – might be helpful!!

Chemistry 4-5-18 Resonance & Polyatomic Ions

CHEMISTRY: Wow! Lewis structures, multiple bonds, and now resonance and polyatomic ions! 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!

Chemistry 4-4-18 Multiple Covalent Bonds

CHEMISTRY: Are your eyes playing tricks on you yet? πŸ™‚ Great job working with multiple bonds with Lewis structures today! Here’s our discussion from on double and triple covalent bonds.

Be careful about getting too happy with double bonding – count electrons and don’t forget CONS. And what else? Oh yes, PRACTICE, PRACTICE, PRACTICE! We’ll put another twist on Lewis structures tomorrow!

Lost in the Don Juan Basin

Welcome to a great adventure! You’ve learned so much this year – not just concepts, but skills, and I can’t wait to see how you are going to apply it all!

Here’s the place where you can post your questions about the Lost in the Don Juan Basin project so that everyone can see the answers.

First answer – the due date is Tuesday, April 17.

A really useful hint? Go back and re-read the project again – this time with a highlighter. It’s amazing how much I miss the first time I read something. So what’s your next question? πŸ™‚

Flickr photo by P

Chemistry 3-22-18 Chapter 5 Overview

CHEMISTRY: Awesome review today! Here is our overview of the test from today. Lot’s of great practice! Here are links to the videos we watched today on arsenic and the Marsh test. Can you draw and describe the test for arsenic? Marsh Test for Ar and Napoleon’s Wallpaper

Speaking of studying for the test, are you practicing the things we talked about yesterday and today. And are you using the Chapter 5 Stuff to Know Sheet?

God bless you as you study! I’ll be praying for you!!

Chemistry 3-21-18 One Last Look at the Second Part of Chapter 5

CHEMISTRY: Here is our super important look at some of the homework questions from last night – and others! If you were absent from class today, it would be a GREAT idea for you to closely watch this vodcast and play along! It would be great help for the test!

Need extra practice or help on something from the chapter? Help session tomorrow, Thursday morning, 7:20ish A.M. Also, have you checked out the review games that are in the online textbook? Great way to practice answering questions!

Speaking of studying for the test, did you find the Chapter 5 Stuff to Know Sheet? Have you made your own?

God bless you as you study! I’m praying for you!!

Chemistry 3-20-18 Electron Affinity, Ionic Radii & Electronegativity

CHEMISTRY: So you’re saying, not only are there atoms that want to get rid of electrons, there are atoms that want to take them? Here’s a picture of chlorine taking an electron from sodium – or sodium giving an electron to chlorine. I’ll let you decide!

Image source

Chemistry 3-19-18 Atomic Radii & Ionization Energy

CHEMISTRY: Welcome to chapter 5 – again! Here’s the lesson for today. It’s the lecture on the first two periodic trends – atomic radii and ionization energy. Who knew mama ducks could help you understand chemistry!?!

Chemistry 3-2-17 Atomic Radii & Ionization Energy from Tammy Skinner on Vimeo.

flickr photo by Gerry Balding