Hon Chemistry 11-14-13 Structure of the Atom, Pt. 2

HON CHEMISTRY – Hey guys, here’s the lecture from Thursday on how scientists discovered protons and neutrons. You know, in class yesterday and today I just gave you one name to go with each, but do you think these men did all the work by themselves? Why don’t you ask me about that tomorrow?

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.

Don’t forget about the video clips we watched in class, they’ll help you review the different experiment that the guys like Thompson and Rutherford did. Here’s another one on The Discovery of the Nucleus. And again – do you think there could be anything smaller than protons, neutrons, and electrons? Hmmmmm……

P. S. Did you figure out what was in your atom?

HON CHEMISTRY 11-14-15 Structure of Atom, Pt. 2 from Tammy Skinner on Vimeo.

flickr photo by Here’s Kate


Chemistry 11-14-13 Percent Composition

CHEMISTRY: Great job today… although, it was kind of weird watching you chew gum in class!

Lab reports are due Saturday midnight – to be saved to your Google Dropbox as a PDF. Double check your calculations, sig figs, etc. Remember you are finding the percent of SUGAR in gum, so that means the mass of what goes on top? Show all your data – everything you measured, and everything you calculated. And don’t forget the conclusion!

BTW – I think you’ll find that percent composition problems are really easy to catch on to. Make sure, though, you can write chemical formulas (I won’t give them to you!) and that you’ve memorized the formulas for acids and those chemical names for common substances so that you’ll have something to find the percent composition of!

CHEMISTRY 11-14-13 Percent Composition from Tammy Skinner on Vimeo.

flickr photo by Τϊζζ¥