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 – 8, 10 – 15. And don’t forget the Science In the News for tomorrow!
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!!
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! 
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!
CHEMISTRY: Happy Friday. Ready to begin another chapter? Here’s the first lesson from chapter 6, the introduction to chemical bonds. Since the class period was really short today, I’m posting a vodcast from another year. It covers what we discussed today, but it also includes what we’ll do on Monday, where you find the difference in electronegativity to determine the type of bond. Have a great weekend!
CHEMISTRY: Hey guys, how do you like the new Smart board? We’re still having a bit of a challenge with the recordings, so I’m going to try to post the lecture from Friday – electron affinity, ionic radii, valence electrons and electronegativity, but let me know if it doesn’t work. Good luck studying for your test! (If you were absent, we moved it to Tuesday!)
HON CHEMISTRY: Hey guys, would this help? I found an old lecture on electron affinity, ionic radii, and valence electrons. Good luck studying for your test!
CHEMISTRY: Just drawing arrows, right? Well that’s the last part of drawing dipoles. First, make sure you can draw Lewis structures, then draw the correct molecular geometry, then all you do is draw the arrow over the bond in the direction of the element with the largest electronegativity. Easy, huh? But man is it important. And it helps explain a lot. More tomorrow…
CHEMISTRY – Hey guys, here’s the lecture on valence electrons 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 trend – electronegativity. You’ll find it’s very similar to electron affinity. Don’t forget Linus Pauling!
