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Harvesting Chemicals from a Battery. This tutorial shows how to take apart a spent zinc-carbon dry cell of the common household type.

Harvesting Chemicals from a Battery

Besides making for an interesting object lesson in electrochemistry, taking apart a spent D-cell, for instance, allows you to salvage many materials which can be of use to amateur chemists–materials which would otherwise probably end up in a landfill. Separated from their reactive components, the leftover parts of the battery can be safely added to most municipal recycling streams. A zinc carbon cell (Wikipedia) contains manganese dioxide, which, among other things, is useful as a catalyst in the production of oxygen gas from hydrogen peroxide. Believe in UFOs? [VIDEO] Bill Gates on energy. Man creates kinetic sculpture that moves and lives on its own. Hack Google Leeched From Youtube! West Wing confronts the scale of maps used in public schools. Waterdrop shot in 10000 frames a second.

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Extraordinary BMX Tricks

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