Friday, September 21, 2012

Tues., Sept. 25, 2012

Objectives: Groups of elements
Announcements: 
Turn in notebooks Friday

Warm-up: If we do an experiment where there is no "right answer" but we have many trials (or "replicates") we often describe our percent variation from the average. It describe how far off each data point is from the average, compared to the average.


What's an atom look like? (Pick a card, any card)
Ions
Binary Ionic Compounds (predicting formulae)
Polyatomic Ions
Homework: Memorize the first 20 elements on the periodic table...Number (and position), symbol & name...quiz Friday.

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