Senior Chemistry
Summary: The following videos are based on the Senior Chemistry Unit.
- Visit Website
- RSS
- Artist: PapaPodcasts
Podcasts:
1.10 - Isotopes, Isotopic Abundance & Average Atomic Mass
1.04 - Significant Digits Rule for Calculations
1.03 - Significant Digits: When is a Zero Significant?
KEY CONCEPTS: Boyle's Law: Pressure and Volume inversely proportional when Temperature is constant Charles's Law: Volume and Temperature directly proportional when Pressure is constant Gay-Lussac's Law: Pressure and Temperature directly proportional when Volume is constant Combined Gas Law: Combines ALL 3 equations into 1 NOTE: Initial terms on left of equal sign and final terms on the right
KEY CONCEPTS: STP - Standard Temperature and Pressure Kelvin scale for Temperature
KEY CONCEPTS: A=represents the CENTRAL ATOM X=represents the number of surrounding atoms E=represents the number of unshared electrons surrounding the CENTRAL ATOM 2 Regions of High Density Electrons AX2 - Linear 3 Regions of High Density Electrons AX3 = trigonal planar AX2E = Bent 4 Regions of High Density Electrons AX4 = tetrahedral AX3E = Trigonal pyramidal AX2E2 = Bent 5 Regions of High Density Electrons AX5 = Trigonal bipyramidal AX4E = Seesaw AX3E2 = T-shaped AX2E3 = Linear 6 Regions of High Density Electrons AX6 = octahedral AX5E = Square pyramidal AX4E2 = Square planar
KEY CONCEPTS: 1. Draw the Lewis structure for the molecule or ion. 2. Count the total number of regions of high electron density (bonding and unshared electron pairs) around the central atom. * Double and triple bonds count as ONE REGION OF HIGH ELECTRON DENSITY. * An unpaired electron counts as ONE REGION OF HIGH ELECTRON DENSITY. * For molecules or ions that have resonance structures, you may use any one of the resonance structures. 3. Identify the most stable arrangement of the regions of high electron density as ONE of the following: * linear (2 regions) * trigonal planar (3 regions) * tetrahedral (4 regions) * trigonal bipyramidal (5 regions) * octahedral (6 regions)
KEY CONCEPTS: The following video looks at an introduction to VSPER Theory. We look at what is required for us to identify the shape of the following compound.
KEY CONCEPTS: The following video looks at an introduction to VSPER Theory. We look at what is required for us to identify the shape of the following compound.
