Chemical and Physical Changes
Chemical and Physical Changes STEM Case
The Secret Service recently arrested suspects accused of counterfeiting coins from 1915 valued at $50,000 each. The students act as a forensic scientist to investigate the crime scene and the evidence. Students learn about chemical and physical changes to recreate the methods used to make the coins as evidence for the trial.
STEM Cases are interactive explorations in which students practice problem-solving and critical thinking as they solve a real world problem as a STEM professional. More About STEM Cases
Choose the level that is appropriate for your students.
| Level | Description | Estimated Time |
|---|---|---|
| Middle School | This version is for middle school classes. | 30-40 min |
Expanded Handbook
The Expanded Handbook has additional concepts not covered in the embedded STEM Case Handbook. More About Handbooks
| Level | Description | Estimated Time |
|---|---|---|
| Middle School | The Expanded Handbook covers structure of atoms (protons, neutrons and electrons), electrical charges, and chemical energy, in addition to the concepts covered in the handbook section of the Middle School Case. | 20-25 min |
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User Submitted Lesson Materials (1):
Gizmo Handbook - Chemical and Physical Properties
Use this when your students fill out the handbook. This can be exported as a PDF and used with Kami onli... (more)ne too.
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Handbook, Middle School Level
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