Activity Number
172
Editable
Overview and Learning Objectives
Central Concepts
Textbook References
Benchmarks and Standards
Activity Credits
Requirements

The Relationship Between Interaction Strength and Melting Point

Interactive model, with minimal support

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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

Students discover the relationship between interaction strength and melting point.

Through this activity, students should learn that for crystals, higher melting temperature is a result of stronger bonding among atoms.

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Central Concepts

Key Concept:

The interaction strength (the potential well depth parameter Epsilon): At a given temperature, increasing Epsilon will result in condensation, and decreasing Epsilon will lead to melting.

Additional Related Concepts

Physics/Chemistry

  • Melting point

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Textbook References

  • Biology: Exploring Life - Chapter 4: The Chemical Basis of Life

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Benchmarks and Standards

AAAS

  • THE PHYSICAL SETTING: ENERGY TRANSFORMATIONS - Different energy levels are associated with different configurations of atoms and molecules (Full Text of Standard)

  • THE PHYSICAL SETTING: THE STRUCTURE OF MATTER - The configuration of atoms in a molecule determines the molecule's properties (Full Text of Standard)

NSES

  • Physical-Science: Energy Conservation / Entropy - 3 Heat consists of random motion and the vibrations of atoms, molecules, and ions (Full Text of Standard)

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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.