The Chemistry of Natural Dyes Book with Experiments

 

The Chemistry of Natural Dyes is the second in a three-volume series to teach high school chemistry students about dyes and colorants through a hands-on approach. This book looks at traditional dyes derived from plant and animal sources that are still used by many artisans around the world. Students are introduced to the application of plant materials as natural dyes by dyeing eggshells with onion skins and coffee. Other activities include dyeing wool with dyes extracted from natural materials and studying the effect of several mordants on natural dyes.

• 56 pages
• Grades 9 - 12

Table Of Contents:

• Acknowledgments
• Foreword
• The Center for Chemical Education
• What Are the Palette of Color Monographs?
• How to Use The Chemistry of Natural Dyes
• Employing Appropriate Safety Procedures
• Part A: Teacher Background Information
• What Are Natural Dyes?
• What Is a Dye?
• Classifying Dyes
• The Structure of Wool
• Dyeing Wool
• Notes and Setups for Activities
• Activity 1: Sassy Eggs
• Activity 2: What Color Will Appear?
• Activity 3: How Is Dye Color pH-Dependent?
• Activity 4: How Do Mordants Affect Dye Colors?
• Activity 5: How Colorfast Are Natural Dyes?
• Extensions
• Supplementary Activities and Information
• Literature Integration
• Other Cross-Curricular Integration
• Dye Terms and Common Language Expressions
• References
• Part B: Classroom Materials
• Whats Sassy About Sassy Eggs?
• Activity 1: Sassy Eggs
• Student Background 1: The Historical Importance of Natural Dyes
• Overhead 1: The Dye Works
• What Makes Dyes Work?
• Student Background 2: Natural Dyes and Wool
• Overhead 2: Hydrogen Bonding in Keratin
• Overhead 3: Four Types of Interactions or Forces in Keratin
• Overhead 4: Formation of a Cystine Unit from the Oxidation of Two Cysteine Units
• Whats Your Favorite Color?
• Student Background 3: Natural Sources of Important Colors
• Overhead 5: A Madder Plant
• Activity 2: What Color Will Appear?
• Can We Change a Dyes Color?
• Activity 3: How Is Dye Color pH-Dependent?
• Overhead 6: Ionic Bonding Between Anionic Dye and Cationic Site on the Protein Fiber
• Student Background 4: Mordants
• Activity 4: How Do Mordants Affect Dye Colors?
• Overhead 7: The Mordant Chromium Ion Provides a Link Between the Dye Molecule and the Protein Fiber
• Will the Dye Color Fade?
• Student Background 5: Fast or Fugitive?
• Activity 5: How Colorfast Are Natural Dyes?

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