Chemistry 1020--Lecture 5--Notes
Gaining and losing electrons forms ions. Explains ionic composition of compounds between IA or IIA and VIA or VIIA elements. (Illustrate formation of ions of these groups using Lewis structures).
Sharing electrons forms covalent bonds of molecules. Give some examples of sharing of electrons.
Rules for writing Lewis structures:
Go through examples:
H2, Cl2, H2O, NH3, CH4, CO2, CO, SO2, SO3, NO, O2, O3
What we know as light is just one form of energy known as electromagnetic radiation. So called because as it passes through space it disturbs the electrical and magnetic fields of space. This disturbance gives it the property of a wave, just as the surface of a lake is disturbed.
White light through diffraction grating to show rainbow. Laser light showing just one wavelength.
Colors of different ions when activated in flame of a bunsen burner. Explain that this is related to electrons jumping between different energy levels of the atoms.