Activity Number 301

	Overview and Learning Objectives
	Classroom Practice
	Central Concepts
	Benchmarks and Standards
	Extensions and Connections
	Activity Credits
	Requirements

Chemical Reactions and Stoichiometry (SAM)

Interactive, scaffolded model

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	Overview and Learning Objectives Students review basic chemical equations, what they represent, and how temperature and concentration affect reaction rates. Students will be able to: • Recognize that chemical reactions happen when bonds form and bonds break. • Analyze how concentration and temperature affect reaction rate. • Write a chemical reaction, balance the equation, and explain what is happening in words. • Define the limiting reactant in a chemical equation. • Classify chemical reactions as: synthesis, decomposition, or single displacement. return to top



	Classroom Practice Teacher's Guide: http://sam.concord.org/publications/teacher-guides/chemical_reactions.ver7.pdf return to top



	Central Concepts Key Concept: Additional Related Concepts Physics/Chemistry Bonds Breaking bonds Chemical reaction Collision Concentration Covalent bonds Reaction rate return to top



	Benchmarks and Standards NSES Physical-Science: Chemical Reactions - 1 Chemical reactions occur all around us, for example in health care, cooking, cosmetics, and automobiles (Full Text of Standard) return to top



	Extensions and Connections Fermi Lab's ARISE Project suggests the following enhancement to this SAM unit: http://www.concord.org/~barbara/SAM/ARISE/ARISE_SAM_chem_reactions.pdf return to top



	Activity Credits Created by CC Project: SAM using Molecular Workbench return to top



	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. return to top

These materials are based upon work supported by the
National Science Foundation under grant number DUE-0402553

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.

Chemical Reactions and Stoichiometry (SAM)

Overview and Learning Objectives

Classroom Practice

Central Concepts

Additional Related Concepts

Benchmarks and Standards

Extensions and Connections

Activity Credits

Requirements