Chem4kids
Chem4 Kids: Acids & Bases
This Chem4Kids site provides a general overview of acids and bases, and their use in chemistry. Content focuses on "names to know" and how acids and bases work.
CK-12 Foundation
Ck 12: Polarity and Intermolecular Forces
[Free Registration/Login may be required to access all resource tools.] The following online tutorial describes how the electronegativity difference between two atoms in a covalent bond results in the formation of a nonpolar covalent,...
CK-12 Foundation
Ck 12: Physical Science: Chemical Formula
[Free Registration/Login may be required to access all resource tools.] How to write chemical formulae and what they represent about the substance.
CK-12 Foundation
Ck 12: Physical Science: Transition Metals
[Free Registration/Login may be required to access all resource tools.] Group 3-12 elements and their properties.