Today is October 3, 2012 You need to finish your review sheet from yesterday ON YOUR OWN! There is no talking for the beginning of class I’m going to walk.
P ERIODIC T RENDS. 1. W HICH OF THE ELEMENTS IS THE METALLOID ? 1. Aluminum 2. Silicon 3. Chlorine 4. Magnesium 5. Sulfur.
The Structure of Atoms and Mole Theory. Element: is a pure chemical substance made of one type of atom. They are classified as metals, nonmetals or semimetals.
