Activity Number
284
Editable
Overview and Learning Objectives
Assessment
Central Concepts
Textbook References
Benchmarks and Standards
Extensions and Connections
Activity Credits
Requirements

Introduction to Crystals (an 8-page, 1-2 class activity)

Interactive, scaffolded model

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This Activity Requires:

  • Java 1.5+ - Java 1.5+ is available for Windows, Linux, and Mac OS X 10.4 and greater. If you are using Mac OS X 10.3, you can download MW Version 1.3 and explore within it instead.

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Overview and Learning Objectives

Crystals are common forms of solids characterized by the order of the molecules. In this activity students explore crystal structure.

Students will be able to:

  • describe one possible order of a crystal;
  • understand the van der Waals, ionic charges and electron clouds that hold various types of crystals together;
  • melt and attempt to reform a molecular crystal;
  • describe types of imperfections;
  • predict the effect of defects and grain boundaries on crystal cleavage.

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Assessment

Pre-Post Test: http://www.concord.org/~barbara/workbench_web/pdf/Intro_to_crystals_assess4.pdf

In MW

http://www.concord.org/~barbara/workbench_web/models/jnlps/IntroCrystalsassess1.jnlp

Rubric

http://www.concord.org/~barbara/workbench_web/pdf/Intro_to_crystals_RUBRIC4.pdf

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Central Concepts

Key Concept:

Crystals are ordered repetitive arrays of atoms.

Additional Related Concepts

Physics/Chemistry

  • Crystal
  • Crystallization

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Textbook References

  • Biology (Miller and Levine) Prentice Hall 5th Edition - Unit 1: Chapter 4 - The Chemical Basis of Life

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Benchmarks and Standards

AAAS

  • THE PHYSICAL SETTING: THE STRUCTURE OF MATTER - Atoms often join with one another in various combinations in distinct molecules or in repeating three-dimensional crystal patterns (Full Text of Standard)

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Extensions and Connections

Closely connected activities in this database include molecular crystals, x-ray crystallography, and piezo electric crystals.

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Activity Credits

Created by CC Project: Molecular Workbench using Molecular Workbench

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Requirements

  • Java 1.5+ - Java 1.5+ is available for Windows, Linux, and Mac OS X 10.4 and greater. If you are using Mac OS X 10.3, you can download MW Version 1.3 and explore within it instead.

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NSF Logo
These materials are based upon work supported
by the National Science Foundation under grant numbers
9980620, ESI-0242701, EIA-0219345, DUE-0402553, and 0628181.

Any opinions, findings, and conclusions or recommendations expressed in this
material are those of the author(s) and do not necessarily reflect
the views of the National Science Foundation.