Chemical and Physical Changes Lab

Common Core Connection Objective Today I will be able to: Differentiate between a physical and chemical change by recording observations in the lab Informal assessment – monitoring group interactions as they complete the lab Formal assessment – analyzing student responses to the exit ticket and lab questions Common Core Connection Value Evidence Reason abstractly and quantitatively Use appropriate tools strategically

Lesson Sequence Evaluate: Warm-Up Explain: Lab Safety Explore/Elaborate: Chemical and Physical Changes Lab Evaluate: Exit Ticket

Warm - Up What is the difference between a physical and chemical change? What evidence of a chemical change will I look for in the lab today?

Objective Today I will be able to: Differentiate between a physical and chemical change by recording observations in the lab

Homework Finish answering lab questions STEM Fair Due October 10

Agenda Warm-Up Lab Safety Chemical and Physical Changes Lab Exit Ticket

Chemical and Physical Changes Lab Ms. Ose will assign lab groups today

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 of all chemicals in the waste container, DO NOT pour directly down the sink When you finish, return the lab area to its original state and begin working on the lab questions

Exit Ticket On the board, write the experiment that you had the most difficult time determining whether it was a chemical or physical change