Chem vs. Phys Change Mentos and Coke

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 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

Lesson Sequence Evaluate: Warm Up Elaborate: Chemical vs. Physical Changes Practice Engage: Mentos and Coke Demonstration Elaborate: Argument Writing Evaluate: Exit Ticket

Warm-Up 28.50 g of iron shot is added to a graduated cylinder containing 45.5 ml of water. The water level rises to the 49.1 ml mark. From this information, calculate the density of the iron.

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

Homework Matter Quiz Wednesday September 24 STEM Fair Due October 10

Agenda Warm Up Collect Lab Physical and Chemical Changes Practice Mentos and Coke Argument Writing Exit Ticket

What questions do you have about the lab? Collect Lab What questions do you have about the lab?

Chemical and Physical Changes Practice Complete the practice at your desk. We will review the responses as a class

Mentos and Coke Demo

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

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