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Molecular Stepping Stones

 

Molecular Stepping Stones
Molecular Stepping Stones
features online activities, including simulations, to help students understand 10 key concepts underlying many biological processes. Topics include atomic structure, random motion, spatial equilibrium, strong chemical bonds, compounds, intermolecular forces, self-assembly, proteins, chemical reactions and catalysis, DNA, and biologica. (The Concord Consortium, National Science Foundation)

   
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Interesting Fact:
In the Strong Chemical Bonds activity, students explore the role of electronegativity in bond formation by setting the electronegativity of two bonded atoms. They will see that ionic bonds form between atoms of very disparate electronegativities, that polar covalent bonds form between atoms of somewhat disparate electronegativities, and non-polar covalent bonds form between atoms that have similar electronegativity.