Chemical Bonding

Synthesis of Nylon

When two immiscible solutions are poured into a dish, solid nylon forms at the interface.
Nylon Setup

Properties of Two Ionic Salts (Crystals): Halite and Calcite

When a large halite crystal, NaCl(s), is struck with a hammer, it cleaves evenly, 90° straight edges. When a large calcite crystal, CaCO3(s), is struck with a hammer, it cleaves at a slant angle. A crystal of halite, sodium chloride, does not conduct, but when it is pulverized and dissolved it does conduct. A crystal of calcite, calcium carbonate, when placed in water does not dissolve.
Why ionic compounds crack Demo Setup Image853

Crystal Models

A collection of thirteen models of metallic and ionic crystal lattices for display in classroom.
Sodium Chloride Model

Le Chatelier's Principle - Copper Ion

A copper(II) chloride solution alternates between blue and green when ligand concentrations change.
Le Chatelier Green


© Copyright 2012 Email: Randy Sullivan, University of Oregon Chemistry Department and UO Libraries Interactive Media Group