Chemistry 3-22-12 Intro to Chemical Bonds

CHEMISTRY: Welcome back to chemistry! Ready to begin another chapter? Here’s the first lesson from chapter 6, the introduction to chemical bonds. Patience! We’ll get to the good application stuff in just a bit!

BTW – Homework goes with what we did today: Pg. 209 – 213: 1 โ€“ 8, 10 – 15. And don’t forget the Science In the News for tomorrow!

Chemistry 3-1-12 Periodic Trends, Pt. 2

CHEMISTRY: Wow! We finally finished the chapter!! Here’s the lecture from Thursday – second ionization energy, electron affinity, ionic radii, valence electrons and electronegativity. Lots of stuff to know, and lots of stuff to be able to apply!

Good luck studying for your test – you need to start that today! Have you checked out the Chapter 5 Stuff to Know Sheet on Edline? And don’t forget www.sciencegeek.net. The Unit 2 section would be a great place to practice and check to see if you’ve learned what you think you’ve learned.

Also, here’s a copy of the Chapter 5 Review Worksheet – which isn’t really a review worksheet, more of a sample test. Good luck studying! I’ll be praying for you!!


flickr photo by doncon402

Hon Chemistry 2-16-12 Intro to Chemical Bonds & Covalent Bonding

HON CHEMISTRY: Hey guys, here is the lecture on the intro to chemical bonds, electron dot notation, and covalent bonding. Make sure you add the diatomic molecules to your “things I have to memorize for the test” list. We’ll tackle Lewis structures tomorrow! ๐Ÿ™‚


flickr photo by Today is a good day

Hon Chemistry 2-8-12 Ionic Radii & Electronegativity

HON CHEMISTRY – Hey guys, here’s the lecture on valence electrons and how you find the possible ion charge of an atom. Three things to get straight – valence electrons, how many electrons an atom gains or loses, and how that relates to the charge of the atom. Also today we talked about the last periodic trends – ionic radii and electronegativity. Have you begun to notice a trend among the trends? Don’t forget Linus Pauling!