COSM

Percent Composition

Activity Summary
Students will examine whether or not candy DNA models often used in introductory biology courses are compositionally accurate in terms of the percent weight composition of each component to the overall chemical weight of a normal DNA molecule.

Grade Levels
9-12

Learning Objectives
1. Explain what percent composition is
2. Explain what percent error is
3. Determine whether or not DNA models are compositionally accurate

Lesson Materials (view or download)
PowerPoint
Lesson Plans

Keywords
DNA, percent composition, percent error

Last updated: 3/5/2015

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