HON 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 the lecture (or an old remix, I should say) on 2nd ionization energy and electron affinity.
Monthly Archives: January 2013
Chemistry 1-23-13 Hydrogen Emission Spectrum & Bohr Model
CHEMISTRY: I figured anybody who ditched his honeymoon to finalize his work on atomic theory deserved to have his picture on our website. (And, by the way, great job making like electrons today – way to role play!)
So, do you think he’s right – or wait, are they waves? What did you think of the animated version of the double slit experiment? Corny, I know, but it really has a ton a great, very accurate information. Let’s talk more Friday and see what you think then.
Here are a couple of other links to the videos we watched in class – super helpful as you study for the test!!
Spectrum of the Stars – overivew of the results of the spectroscopy lab you did, shows the connection between our lab on spectroscopy and how we can identify elements
Emission Spectrum of Hydrogen – how we use it to know about the energy levels in an atom
And the last one Animated Quantum Video is the one we watched in class today 2nd and 7th peroids. Pretty corny, but GREAT info! It explains all about why scientists began to believe that electrons could be acting as waves. Great review for the test!!
Physics 1-23-13 Center of Mass
PHYSICS: Ohhhhhhh, so that’s how that trapeze guy stays up there! Wait – what’s the pole for?? Here’s the lecture from Wednesday on center of gravity, or rather, somebody forgot to turn on the mic, so here’s the lecture on the same stuff from last year.
Great opportunities for discussion and application!?! 🙂
Hon Chemistry 1-22-13 Atomic Radii & Ionization Energy
HON CHEMISTRY: Hey guys, here’s the lecture on the first periodic trends – atomic radii and ionization energy. You made some great connections today!
Don’t forget the element videos at periodicvideos.com. As you begin to study and review the properties and uses of the elements, it would be a really great idea for you go back and view hydrogen, potassium, mercury, copper, arsenic, phosphorus, and chlorine. And you might just learn something along the way! You can view the videos on these and all of the elements on this cool website, periodicvideos.com. Just click on the elements, it’d be a great review as you start to prepare for the test. Wait – did I say test?!?
Photo Credit: Infidelic via Compfight cc
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Physics 1-22-13 Torque
PHYSICS: Welcome back to the first day of a brand new chapter in physics – one of the last we’ll do on mechanics!! Here’s the lecture from Tuesday on torque. Let’s finish up center of gravity tomorrow. So how’s the balance in your life right now?
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Chemistry 1-18-13 Spectroscopy Lab
CHEMISTRY: How’d you like playing with light? Kind of pretty, huh? Let’s see how it works with a spectroscope on Tuesday!
Are you clear on how to turn in the lab report? Observations from the diffraction grating today will be in two parts: 1) the written observation – answers to those four questions for BOTH types of light on notebook paper, and 2) your drawings of both kinds of light on card stock or heavy white paper, and then both drawings mounted together on one sheet of construction paper. Be sure to label everything.
Observations from Tuesday with the spectroscope will be answered on the actual lab sheets/packet. Be sure and read ahead so that you can double check to make sure you answered every single observation and question. The entire packet will be due on Wednesday.
Hey – I hear it’s going to be a bit chilly outside on Tuesday. You thinking about bringing a jacket?!?
🙂
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Chemistry 1-17-13 Photoelectric Effect & Energy Problems
CHEMISTRY: Fun field trip today! What? There really aren’t tiny people living in boxes above the doors at Wal-mart? Good job coming up with examples of the photoelectric effect. I had forgotten all about those automatic flush toilets! 🙂
What did you think about the problems? Again, make sure you not only memorize formulas, but also be careful to learn the symbols and units for each of the quantities you’re going to use, it’s easy to get them confused. Here’s the lecture from Thursday – photoelectric effect and then problems at the end.
Image source http://www.wired.com/images_blogs/photos/uncategorized/2009/02/11/brightsource.jpg
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CHEMISTRY 1-16-13 Review of Wave Problems
CHEMISTRY: Need help with wave problems? Here’s just what you need – a review of frequency, wavelength, and energy problems.
Be sure that you know not only the formulas, but also the symbols and units of wavelength, frequency, energy, speed of light, and Planck’s constant. We’ll crank it up another notch tomorrow!
🙂
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Hon Chemistry 1-16-13 p-block Elements
HON CHEMISTRY: You get a bonus! Since I chased so many rabbits over the last few days (and we’ve had icy interruptions!), I went back and found an old vodcast on the p-block elements in just one vodcast. And you get a bonus – it has the f block on it as well!
Be sure and go back and practice getting period, block, group, and type of element from the electron configuration. And don’t forget to go back and look at the nitrogen cycle.Lab tomorrow, and we’ll finish the p-block on Friday.
Speaking of the lab – make sure you have the updated copy of the lab sheets. Read it super carefully – highlight, make notes for yourself, etc. You’re going to need to be moving like a super quick bunny!!
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Chemistry 1-14-13 Wave Properties of Light
CHEMISTRY: So tell me again, if we’re supposed to be figuring out electrons, why are we studying waves? Here’s the lecture from Monday on just that. Make sure you know the types of electromagnetic radiation and the uses of most of them (all except for long waves). How did you like the light problem formulas – so far? We’ll explore wave problems further tomorrow – make sure you bring a calculator to class!