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OpenStax
Open Stax: Chemical Bonds
Learn here about chemical bonds, a weak or strong electrical attraction that holds atoms in the same vicinity.
Khan Academy
Khan Academy: Test Prep: Mcat: Chemical Processes: Covalent Bonds: Intramolecular and Intermolecular Forces
Explains what intramolecular and intermolecular forces are and the different types for each. Includes lots of examples.
American Chemical Society
Middle School Chemistry: Energy Levels, Electrons, and Covalent Bonding
Discover how covalent molecular bonding affects the energy levels of electrons.
John Wiley & Sons
Concepts in Biochemistry: Concept Reviews: Water, P H, and Non Covalent Bonding
A detailed review of water and its structure. Included are diagrams, animated graphics, and review quizzes. For the advanced high school student.
Iowa State University
Iowa State University: Percent of Water in a Crystalline Solid Hydrate
Lab activity uses a computer simulation to determine the amount of water in a crystalline solid hydrate.
Iowa State University
Iowa State University: Empirical Formula of a Compound
Use this computer simulation to determine the amount of water in a crystalline solid hydrate.
University of California
Ucmp: Computer Model of Dna
A slight departure from the classic view of DNA showing that the molecule is not exactly a twisted ladder. Good image and explanation to go with it.