Brilliant Time-Lapse of Alaska’s Northern Lights

The beautiful interplay of charged particles from outer space (electrons and protons) with single atoms of oxygen! If you're interested, read more at this Wikipedia link.

Topics for Unit 6 Bonding Test

Bonding Unit Topics (Test Dec 4)

General Bonding:

Octet Rule
Electronegativity and Bond Type (non polar bonds, polar bonds, ionic bonds)
Lewis Dot Diagrams
Valence electrons for each family (Main Group columns: 1A, 2A, 3A, 4A, 5A, 6A, 7A, 8A)

Covalent Bonds

General properties (gases, liquids or soft solids at room temp)

Lewis Structures

Single, double and triple bonds (Hybridization: sp3, sp2, sp)

VSEPR shapes (linear, bent, trigonal planar, trigonal pyramidal, tetrahedral)

Polar vs nonpolar molecules

Ionic Bonds

Ionic Crystals

Properties of ionic compounds as described by ionic bonds

Brittle Solids at room temperature

High melting and boiling points

Don’t conduct electricity in solid state

Conduct electricity when molten or dissolved in a polar liquid.

Metallic Bonds

Mobile sea of valence electrons attracted to metal cation

Properties of metals as explained by metallic bonding.

luster, malleable, ductile, good conductors of heat and electricity

Alloys

Intermolecular Forces (IMF)

London Dispersion Forces

Dipole - Dipole Forces

Hydrogen Bonding

Homework due 11.30.15

Read
  Chapter 14.1A, pp 489-491
Do
  Problems 1, 3, 5, 7 pg 514

note:  Practice test for Unit 6 is in Chemistry Locker

Homework due 11.24.15

Read
  Chapter 12.4C, pp 430-433
Do
  Problems 50 (b,c), 51, 52 (hint: read the PDF I posted earlier for a direct answer to this) pg 437

The CHEMICAL BONDS Song - Mr. Edmonds - Rock with Abba's "Dancing Que...

Homework due 11.23.15

Read
Chapter 12.4A and 12.4 B, pp 423-430
Do
Problems 39, 40, 41, 42, 45, 48 pg 437

How to Draw Lewis Structures: Five Easy Steps