Thursday, February 19, 2009

Teachers in Training

Today students played teacher and taught each other about ionic and covalent bonds. We also learned more about why certain elements bond better with each other= valence electrons! The valence electrons of atoms that bond should add up to 8. Here is a chart showing how elements in the same column have the same number of valence electrons, or electrons on the very edge of the atom that are involved in chemical bonds:
For Example: Lithium (1 valence e-) bonds with Fluorine (7 valence e-) because they add up to 8 to make the bond noble.

Homework: None