Green Chemistry

CONTENTS OF CURRICULUM UNIT 09.05.03

  1. Unit Guide
  1. Overview
  2. Objectives
  3. Background
  4. Strategies
  5. Activities
  6. Annotated Bibliography
  7. Resource Bibliography
  8. Delaware State Standards 44 and Implementation 45 - Appendix A
  9. Typology Classification of Plastics, Density and Examples of Use of Each 52 - Appendix B
  10. Market Price of Recycled Items as of July 9, 2009 53 - Appendix C
  11. Materials Delaware Solid Waste Authority Collects and Recycles 54 - Appendix D
  12. Phase Change Graphs for Aluminum, Steel, Iron, and Tin 55 - Appendix E
  13. Endnotes

It's Not Waste: Teaching Recycling through Density, Phase Change and Solubility

Victoria Lyn Deschere

Published September 2009

Tools for this Unit:

Guide Entry to 09.05.03

Conservation. Sustainability. Renewable resources. These immense concepts overwhelm my students; even I have difficulty wrapping my mind around them. With such multifaceted ideas, the students find it complicated to act in an earth-friendly manner. The aim of this unit is three fold: to create questioners and lifelong learners, to make an impact on the environment and to influence businesses in our area to act more responsibly. In this unit, the students will explore local and simple actions to aid the planet while developing problem-solving skills. Additionally, students will apply the concepts of density, phase change, and solubility while experimenting with methods of recycling in a single stream system. They will determine how to sort comingled recyclables to prevent contamination and how to reclaim the various materials for reuse. In this unit, students will explore the application of scientific concepts and techniques of investigation, problem-solving strategies, as well as behaviors that will help sustain the environment.

(Developed for General Science, Properties of Matter Unit , Beginning Chemistry, grade 7; recommended for Chemistry, Environmental Science, and General Science, grades 6-9)

Comments:

Victor Joseph

September 30, 2014 at 1:08 pm

Appendix-E of above article

The graph of Al, Fe,Sn & steel phase change temperature T in centigrad vs Time. The time axis is in what units hr, minutes, seconds or days?

Brudvig Gary

October 2, 2014 at 12:54 pm

. It's Not Waste: Teaching Recycling through Density, Phase Change and Solubility

The time axis is arbitrary because the time required for the phase changes will depend on the size of each sample and the rate that heat is applied.

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