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Unit 3: Chemical Bonds and their Properties

Class Notes Videos:

Class Notes Video #1: Physical and Chemical Properties (15 min)

Class Notes Video #2: Types of Chemical Bonds (17 min)

Class Notes Video #3: How do draw Lewis Dot Structures for Bonds (10 min)

Assignment Help:

Kitchen Lab Questions:

1. Identify 5 physical properties and state why they are physical properties rather than chemical. 

2. Identify 2 chemical properties and state why they are chemical properties rather than physical. 

3. Identify 5 physical changes and state why they are physical changes rather than chemical.

4. Identify 2 chemical changes and state why they are chemical changes rather than physical. 

Mystery Substance Results: (Not in order. You have to compare to figure out which is which!)

      Baking Soda     Corn Starch    Powdered Sugar  Baseball Chalk
 By itselfVery fine white powder. Does not clump to itself.     Very find white powder. Does not clump as much as chalk, but more than baking soda.Very fine white powder    Very fine to chunky white powder. 
 In WaterDoes dissolve, leaves water almost completely clear.     Does not dissolve. Leaves water a milky color.     Dissolves completely after shaking.  Does NOT dissolve, some chunks stay together. 
 In Acid (vinegar)Reacts to form bubbles. More violent reaction than chalk. Does not react or dissolve.Dissolves completely after shaking.     Reacts to form bubbles. Not as violent as baking soda. 

KEY to Ionic, Covalent, Metallic Bonds Practice

Other awesome videos to help with Chemistry:

Tutorial: Physical and Chemical Properties

How Stuff Works: Changes in State of Matter

Physical and Chemical Changes

Interactive: Periodic Table Interactive Activity

Types of Chemical Bonds (Crash Course)

Ionic, Covalent, and Metallic Bonds

Ionic vs. Covalent Bonds (Bozeman Science)

Ionic and Covalent Bonding Visualization (