backyardchem

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imgtutorial

Building a Ball Mill for Grinding Chemicals

Learn how to build a ball mill for grinding solids into fine powders. Commercial ball mills can cost more than $100, but with this tutorial you'll be able to make one that works just as well for no more than $30!
Views 7477 | Rating 70 | Comments 9| Date Aug 11, 2007
imgtutorial

Assigning Oxidation Numbers to Chemical Formulae

This tutorial is for introductory chemistry students. Learn the five easy steps to assigning oxidation numbers to atoms in chemical formulae. Also, I will give you some problems that teachers love to give on tests because they are "tricky".
Views 1333 | Rating 9 | Comments 2| Date Aug 15, 2007
imgtutorial

Synthesizing Pyrophoric Iron (iron that spontaneously ignites)

This tutorial will show you make pyrophoric iron from household chemicals. When this finely-divided form of iron is exposed to air, it spontaneously ignites.
Views 5667 | Rating 7 | Comments 1| Date Aug 14, 2007
imgtutorial

Where to find Household Chemicals

This tutorial will give you all the sources I know of for household chemicals in the United States. This excludes chemical suppliers and ebay. A good majority of these household items are impure sources of chemicals, so in order to obtain just the desired...
Views 863 | Rating 4 | Comments 0| Date Aug 12, 2007