Hon Chemistry 11-29-12 Spectroscopy Lab

HON CHEMISTRY: How’d you like playing with light? Kind of pretty, huh? Let’s begin to put it all together tomorrow!

Are you clear on how to turn in the lab report? Observations from the diffraction grating yesterday 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 on one sheet of construction paper. Be sure to label everything.

Observations from today with the spectroscope will be answered on the actual lab sheets/packet. Double check to make sure you answered every single observation and question. The entire packet is due Monday.

Hey – I hear it’s going to be warm outside tomorrow. And I’m pretty sure I like outside labs, soooooo…….!
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Plumage on Flickr

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Chemistry 11-29-12 Structure of the Atom, Pt. 1

CHEMISTRY – Chocolate chip cookie dough model of the atom? Here’s the lecture from Thursday on how scientists began to determine the structure of the atom and the existence of subatomic particles – well, the electron anyway.

Here’s the lecture from Thursday on how scientists began to determine the structure of the atom and the existence of subatomic particles – well, the electron anyway. FYI – as we go on, make sure you know the name of the scientists, the name of their experiments, be able to draw a diagram of their experiment, and describe how they interpreted the experimental results that led to their discoveries. Wow, that’s a mouthful!

Click here for the video on the Cathode Ray Tube Experiment that Thompson did, and also for a little history on The Discovery of the Electron. Do you think there could be anything smaller? Than an electron, I mean??


flickr photo by pixxiestails

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Chemistry 11-27-12 Dalton’s Atomic Theory vs. Modern Atomic Theory

CHEMISTRY: Wow! Pennies turned to gold? Tell me again – how you could you prove that it was or wasn’t? Hey – what a lot of theory today! So the smallest thing that can be that thing is an atom. How do we know that? Well, we have to start at the beginning, and that’s Dalton’s Atomic Theory. If you didn’t get a chance to copy down the Modern Atomic Theory, you’ve come to the right place! Just listen to this vodcast and there you go!

How are you doing comparing Dalton’s Atomic Theory with the Modern Atomic Theory? If you will have it completed by Monday or Tuesday, I’ll be glad to go over it with you. Keep it in mind when you’re studying for the test on this chapter!

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Physics 11-29-12 Conservation of Energy, Etc., Problems

PHYSICS – Great work on the problems today! I think it was a good idea for us to regroup and make sure you had the conservation of energy formula and the work-energy theorem down before we move on to the last part of the chapter tomorrow. Are you still trying to follow formulas, or are you starting to be able to think through the problems and and begin to make connections?

Be careful – don’t just start grabbing formulas and throwing in numbers. Make sure the formulas make sense – ask yourself every time why it makes sense for you to put that particular number in that particular part of the formula. And work them over and over and over until it comes naturally to you!

Here is the worksheet, Ch 5 Review Problems for homework tonight (#1 – 5, 10). Sorry it’s late, I had to go get a flu shot! πŸ™


flickr photo by -BeNnO-

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