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" BUILDING A PILE " |
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| MATERIALS : | ¢
Bar of zinc ------------>electrodes ¢ Bar of copper--------->electrodes ¢ Electric wire ¢ Vinagre ¢ 1 Volt lamp |
| AIM : | Transforming chemical energy into electric energy. |
| PRINCIPLE : | The
electrons migrate through the wire from the zinc bar (negative electrode)
to the butt bar (positive electrode). The acid contained in the vinagre allows the circuit to be closed because the acid divides into positive and negative particles, making the vinagre a perfect electricity conductant . |
| DESCRIPTION : | ¢
Pour some vinagre in a jar. ¢ Put the electrodes inside the vinagre ¢ Connect them to the lamp, to create an electric circuit ¢ After a few seconds we see the lamp lighting on. |
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" BUILDING A PILE " |