Lesson 3: Energy Changes in Chemical Reactions
Duration of Days: 6
Lesson Objective
Students will explore how changes in matter during chemical reactions result in energy being released in some reactions and stored in others. They will develop and use models to describe these processes.
Why do some reactions give off thermal energy and some absorb thermal energy?
Chemical Potential Energy
Endothermic Reactions
Exothermic Reactions
Law of Conservation of Energy
MS-PS1-6
ELA: RST.6-8.3, WHST.6-8.7
Engage- DOK1
Explore/Explain- DOK2
Elaborate- DOK3
Evaluate- DOK1 & DOK4
STEM Module Project- DOK4
Phenomenon: Hot/Cold pack on ankle injury.
STEM Module Project: Warm it up!
The transfer of thermal energy happens only as the salt of a chemical reaction and is not involved in physical changes.
Group work
Visuals
Sentence Starters
Graphic Organizers
Accessing Prior Knowledge
Formative/Summative Assessments:
Lesson Review
Lesson Check
Claim, Evidence, Reasoning
McGraw Hill online textbook/workbook.
Labs/Investigations:
- Magnet Models
- Energy In, Energy Out
- Changing the Energy