Atoms => Molecules... & their properties
Instructor guide will be available... someday. Just try 'em!
||Simple molecule viewer
||View molecules as chemists represent them... or as they actually are (showing regions of charge and neutrality)
||(not all features implemented)
||Guided exploration of the bizarrities of water
||(Currently, no teacher's guide, but hey--it's science, so... or e-mail me!)
||Create static using a balloon rubbed in hair (if too humid, use 'static wand'), pour thin streams of water and mineral oil pasted the charged item
||Do both streams 'feel' the charged item?
||Who is charged?
||Sprinkle a thin layer of ground pepper on pure water. Touch a toothpick that has been dipped in detergent to the surface
||Why does the pepper flee? (Hint: pepper is just 'reporting' on movement at water's surface)
||Oil, water, wax paper, aluminum foil
||place drops of each liquid on flat surface of each covering
||Do liquids cohere? Do they spread?
||Alcohol and water
||Make 4 tubes, each containing 1 ml water and 1 ml alcohol (methanol, ethanol, propanol, butanol). See StructViewer software for 3D structures
||Who mixes? What is this revealing?
||Alcohol and water II
||add saturating amount (1ml should do) of NaCl to the alcohol-water mixtures. Shake vigorously, wait.
||What happens to which tubes? What does this say about Water, NaCl, and the alcohols?
||Alcohol and water III
||[this one isn't confirmed...] try a doubly ionic salt (Ca++, Ba++) instead of single (Na+)