1. Chem vs. Phys Change Mentos and Coke

2. Common Core Connection
Objective
Today I will be able to:
Construct an effective argument by watching a demonstration
Differentiate between a chemical and physical change
Apply proper technique to lighting a bunsen burner
Informal assessment – monitoring student interactions and questions as they complete the practice and construct their arguments.
Formal assessment – analyze student responses to the exit ticket, argument writing and practice
Common Core Connection
Build Strong Content Knowledge
Reason abstractly and quantitatively

3. Lesson Sequence Evaluate: Warm Up
Evaluate: Review Chemical vs. Physical Changes Practice
Engage: Mentos and Coke Demonstration
Elaborate: Argument Writing
Engage/Explain: Bunsen burner lighting
Evaluate: Exit Ticket

4. Warm-Up Identify as a chemical or physical change/property
A match lights when struck
Wood is placed into a chipper
A lump of gold is pounded into a large, thin sheet
Baking powder bubbles and gives off CO2 when it is moistened
A pan of water boils on the stove
Hydrogen Sulfide gas causes silver to tarnish

5. Objective Today I will be able to:
Construct an effective argument by watching a demonstration
Differentiate between a chemical and physical change

6. Homework
Wear closed toe shoes for lab tomorrow

7. Agenda Warm Up Review Physical and Chemical Changes Practice
Mentos and Coke Argument Writing
Bunsen Burner Lighting Practice
Exit Ticket

8. Review Chemical and Physical Changes Practice
What questions do you have about the practice?

9. Mentos and Coke Demo

10. How to Construct an Effective Argument
State a claim
Use evidence to back up your claim
Create a counterclaim with evidence
Use specific examples!

11. Bunsen Burner Demonstration and Practice
Watch Mr. Klotz’s Demo and Follow his instructions

12. Lab Safety – Lab Preview
Closed toe shoes, goggles, aprons must be worn to participate
Hair must be tied back
Review Bunsen burner safety
In step 3, DO NOT stare directly into the light
HCl, sodium chromate and barium nitrate are in a low concentration, if you spill it just rinse it off of your skin in a sink
Dispose most of the yellow mixture in a large beaker and rinse with a lot of water
Do the dame with the HCl and Mg

13. Exit Ticket Draw a sample that has two elements and two compounds.
Does your picture represent a pure substance or a mixture?