Monthly Archives: September 2014

Scientific Method Steps
The scientific method is a system scientists and other people use to ask and answer questions about the natural world. In a nutshell, the scientific method works by making observations, asking a question or identifying a problem, and then designing and analyzing an experiment to test a prediction of what […]

Steps of the Scientific Method

Sulfite Anion
Polyatomic ions are ions that contain more than one element. This polyatomic ions list contains many common ions, grouped by charge. Each entry contains the ion’s name, molecular formula and chemical structure. +1 Polyatomic Ions  Ion  Formula Structure Ammonium NH4+ Hydronium H3O+ -1 Polyatomic Ions  Ion  Formula Structure Acetate C2H3O2– […]

Polyatomic Ions List

If you don't add coloring, you slime will be ghostly and transparent. (Steve Jurvetson)
If you’re familiar with the Ghostbusters movies, you know about ectoplasm and ghosts. It’s the viscous supernatural goo associated with spirits manifesting in the living world. Unless you have a pet poltergeist, you’ll need to make your own ectoplasm for haunted houses and ghoul costumes. Fortunately, all it takes is […]

Make Ectoplasm Slime for Halloween

Cat Pumpkin GIF
Looking for an over-the-top science-y Halloween jack o’ lantern? Here’s my favorite… a carved pumpkin that’s both covered in colored flames and shoots fire from every orifice. The colors work much like the analytical chemistry flame test in which heated ions release a characteristic spectrum of light. Materials Real Pumpkin […]

Rainbow Flames Halloween Jack o’ Lantern