Most of class today was spent talking about the Periodic Table of Elements. After we spent the first ten minutes of class working on an isotopes worksheet with partners. I can't get the PDF on my computer, but the page with the download on it can be found here. The worksheet is due with the test, per usual. Some hints for the sheet are: protons never change amount, mass number is the protons plus the neutrons, and always include the mass number when writing the isotopic symbol.
While working on the worksheet, Mr. Liebs played some songs for us regarding the periodic tale that might help us remember the elements names. The first one is by the famous math professor Tom Lehrer.
The second is less comprehensive but is still good, and is by They Might Be Giants.
We then went on to talk about how the periodic table is divided up. More simply divided tables will show the distinction between metals, metalloids, and non-metals.(I would post a picture but blogger's not allowing me to. A good link to one can be found here.)
A more detailed table will show more of the families, which consist of alkali metals, alkaline earth metals, transition metals, halogens,and the noble gases. (Again a good picture may be found here.)
We also started to take notes on the founder of the original periodic table, Dmitri Mendeleev. What's more impressive than his table was his prediction of elements that had yet to be discovered, and some of their properties. He left spaces in his table for his predictions, many of which were very accurate. Just for kicks and giggles, Mendeleev's orginal table looked like this.
And that pretty much wraps up today. The homework is ChemThink: Atoms-Ions, Webassign Reading Sheet and questions 17-24 in the book. The next scribe is Sarah G. Have fun.
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