The Mystery of Mass

This lesson is a set of two activities:

  1. The conservation of mass is illustrated during a teacher demonstration of dissolving salt into water. The mass of the system will be calculated before and after the substances are combined so that students can compare them. Students investigate whether mass stays the same, increases, or decreases during the physical change.

  2. Students complete a paper atom and molecule activity showing the connection between a proper balanced equation and the conservation of mass. Students will use paper atom manipulatives to show the relationships between the reactants and products of a chemical reaction. The balancing of a chemical reaction is the conservation of mass in action.
Resource ID#: 130075 Type: Lesson Plan
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General Information

Subject(s): Science
Grade Level(s): 8
Intended Audience: Educators educators
Suggested Technology: Internet Connection, Interactive Whiteboard, LCD Projector, Microphones
Instructional Time: 50 Minute(s)
Keywords: candles, mass, conservation, salt, chemical reaction
Instructional Component Type(s): Lesson Plan,  Worksheet,  Assessment,  Presentation/Slideshow,  Video/Audio/Animation,  Learning Goal
Resource Collection: FCR-STEMLearn Physical Sciences

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