MS-PS1-2 MS-PS1-6 NGSS Chemical Reactions PowerPoint Interactive Worksheet


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This is a perfect 30-minute introductory scaffold, review or sub plan for NGSS MS-PS1-2, MS-PS1-5 and MS-PS1-6: Chemical Reactions, Conservation of Mass and Endothermic/Exothermic Reactions.

Students use the PowerPoint/Google Slideshow to help them fill in and answer the 4 slide Interactive Worksheet with 2 engaging videos on reactions, conservation of mass and Endothermic/Exothermic reactions.

You can do this lesson all online, hard copies, or a combination of both.

This resource includes the following:

-4 Slide interactive worksheet and key

-16 Google Slideshow that can be converted to a PowerPoint if preferred.

Concepts Included:

Chemical Reactions

Properties and Changes in Matter

Physical Change and Chemical


Evidence for Chemical Reactions

Chemical Equations

Conservation of Mass

Conservation of Matter/Mass





NGSS: Performance Expectations

Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred. MS-PS1-2

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. MS-PS1-5

Disciplinary Core Ideas (DCI)

PS1.B:  Chemical Reactions

• Substances react chemically in characteristic ways. In a chemical process, the atoms that make up the original substances are regrouped into different molecules, and these new substances have different properties from those of the reactants. (MS-PS1-2), (MS-PS1-5) 

• The total number of each type of atom is conserved, and thus the mass does not change. (MS-PS1-5)

• Some chemical reactions release energy, others store energy.(MS-PS1-6)

Science and Engineering Practices:

-Developing and Using Models

-Obtaining, evaluating and communicating.

Crosscutting Concepts:


-Cause & Effect: Mechanism and Explanation

-Systems & System Models

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