HON CHEMISTRY: Molten iron, wow! Here’s our review of drawing ionic bonds and our discussion of ionic vs. covalent bonding, followed by metallic bonding.
Aren’t you glad there are no structures to draw for metallic bonds?! Make sure you can use the electron sea model to explain the properties of metals. Also be able to compare and contrast all three types of bonds.
HON CHEMISTRY: So how ’bout Johannes van der Waals and those intermolecular forces? Tons of application, from bugs walking on water to little fishes breathing dissolved oxygen. And what about the condensation that forms on the outside of an iced tea glass? Hmmm….
And then on to a different way that atoms come together – ionic bonding. Keep in mind that 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!
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CHEMISTRY: Great start to a new chapter – did you realize we did that?! Here’s our discussion of the history of the periodic table and a look at the properties of the groups of the periodic table. Now let’s investigate some of these elements in lab tomorrow!
HON CHEMISTRY: So we’ve put it all together – Lewis structures, molecular geometry, dipoles, and bond type. Here’s our look at the homework worksheet. How’d you do?
After that, a beginning look at the importance of molecular geometry with solubility, and a beginning look at intermolecular forces. Lots of applications, from using peanut butter to get gum out of your hair to little fishes breathing dissolved oxygen. Let’s do more tomorrow!
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HON CHEMISTRY – So why is molecular geometry important? What’s the big deal about knowing the correct shape of molecules? Here’s the beginning of the answer! Great discussion today and great job on drawing dipoles. We’ll continue with intermolecular forces tomorrow!
HOMEWORK UPDATE: Covalent Bonds Worksheet – Honors, Pg 1 only
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CHEMISTRY: Wow! You learned a lot today! Don’t we serve an awesome God?!? You probably knew the periodic table was really organized, but did you realize that it was THAT organized? Awesome!
Be sure and practice with the homework tomorrow night, and don’t forget to use the Aufbau “chart”!!!!
UPDATE: Lab change for tomorrow. Change to Emmision Spectra of Elements. Be sure and print it and bring colored pencils.
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HON CHEMISTRY: Who knew we’d be doing geometry in chemistry?!? Great job today! Lewis structures, multiple bonds, resonance, polyatomic ions, and now molecular geometry. Wow, that’s a lot you’ve conquered in the last few days!!
Molecular geometry is super easy. Make sure you know how to draw Lewis structures, then determine the type of ABE structure and you’ve got it. Here’s a copy of Molecular Geometry Shapes – VSEPR handout. Be sure and memorize the shape and the ABE structure that goes with it. Easy-peazy!
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: Great job with electorn configuration notation today! No audio on the recording today, so I’m posting a lesson from last year.
Just when you were getting the hang of drawing arrows, I go and change it! But don’t you think writing electron configuration notation is a whole lot shorter than doing orbital notation? Don’t get me wrong, knowing how to do orbital is great for seeing how the electrons are paired, but this way is waaaay shorter!
Be sure and practice with the homework tonight, and don’t forget to use the Aufbau “chart”!!!!
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HON CHEMISTRY: Are your eyes playing tricks on you yet? 🙂 Great job working with multiple bonds and polyatomic ions with Lewis structures today!
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: Wow, you did a great job today! Did quantum numbers begin making more sense when you started using them? Good work today on orbital notation. I think you’re going to be seeing arrows and numbers in your sleep!