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Gaining familiarity with the main functional groups is at the heart of learning organic chemistry. ODYSSEY Functional Groups includes molecular models …

The periodic table of the elements provides the most important organizing principle in all of chemistry. Memorizing element symbols and electron confi …

A drop of liquid water, a grain of table salt, a piece of iron, a cube of sugar—are the obvious differences between these very ordinary substances ref …

What does the unit cell of sodium chloride look like? How is its structure different from other salts? What relationship, if any, exists between the s …

What are the most basic lattice types encountered in the structures of elements and compounds? Is there more than one way to efficiently pack simple s …

How do electronegativity differences affect the type of bonding in chemical compounds? Why do some (but not all) molecules have dipole moments? If a m …

Why are some triatomic molecules linear (carbon dioxide, hydrogen cyanide) and others are bent (water, sulfur dioxide)? And why is the bond angle in w …

How different are double and triple bonds from single bonds? And what do double-bonded molecules with multiple Lewis structures―such as ozone, nitric …

What would molecules look like if we could dive in and inspect them on the atomic scale? Would they look anything like the structural drawings in text …

Where are the electrons? ODYSSEY Atomic Orbitals is a 3D visualization tool for one of the most widely taught topics in the introductory chemistry cur …