Unit 3: Chemical Reactions - 24 Days

Full Curriculum

 

Performance Expectations

Develop and use a model to describe how the total number of atoms does not change in a chemical reaction and thus mass is conserved.

Undertake a design project to construct, test, and modify a device that either releases or absorbs thermal energy by chemical processes.

Evaluate competing design solutions using a systematic process to determine how well they meet the criteria and constraints of the problem.

Analyze data from tests to determine similarities and differences among several design solutions to identify the best characteristics of each that can be combined into a new solution to better meet the criteria for success. 

Develop a model to generate data for iterative testing and modification of a proposed object, tool, or process such that an optimal design can be achieved.

 

Assessment (Required)

Hot Pack/Cold Pack Lab
Hot Pack/Cold Pack Lab Teacher Notes 
Alternate
Making Hot and Cold Packs 
Data table
Need Energy rubricStandards
PS 1-5(incorporating ETS 1-2, ETS 1-3, ETS 1-4)
PS1-6 (incorporating ETS 1-2, ETS 1-3, ETS 1-4)

Detailed Unit Plans 
PS1-5 Chemical Reactions-Conservation of Mass Unit Plan 
PS1-6 Chemical Reactions- Thermal Energy Unit Plan 

Essential Questions

How do atomic and molecular interactions explain the properties of matter that we see and feel?

How does thermal energy affect particles?

How can a model be developed and used to describe that the total number of atoms in a chemical reaction does not change and thus mass is conserved?

How can a device be designed, constructed, tested, and modified that either releases or absorbs thermal energy by chemical processes?