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Science » Physical Sciences » Chemistry

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.
Image of DNA to protein synthesis

DNA to protein synthesis

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