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Concord Consortium
The Molecular Workbench Database: Chemical Reactions and Stoichiometry
This simulation helps students investigate the basics of chemical equations. Students will review stoichiometry and what effects their reaction rates.
American Chemical Society
Middle School Chemistry: Temperature and Rate of a Chemical Reaction
Watch molecules collide with enough energy that bonds break and form new bonds in a chemical reaction.
American Chemical Society
Middle School Chemistry: Lesson Plans: Why Does Water Dissolve Salt?
Students use their own model of a salt crystal and water molecule to show how water dissolves salt. Then, they relate their observations to the structure of salt, water, and alcohol on the molecular level.