Páginas: 2 (374 palabras) Publicado: 3 de septiembre de 2012
Team Members:
Matilde Bustamante
Grace Del Carmen
Alejandra GomezMelanie Mongalo


Science Fair

Can a lemon make a LED turn on?Research
In this project the lemon battery acts as a voltaic cell. A voltaic cell is an electrochemical cell that makes electrical energy. It normally consists of two types of metals connected by asalt bridge. Normally the two types of metals are electrons and protons. The zinc nail will work as the electron because it has a negative charge. In the other hand the copper nail is the proton. Boththe protons and electrons will work together to make the LED turn on. Electrons are an elementary particle which has a negative charge. In the other hand the protons are an elementary particle that hasa positive charge. These two objects work as electrodes which make an electrochemical reaction which makes a small potential difference. Electrochemistry is the branch of chemistry that deals withchemical changes caused by electricity. The small potential difference will turn on the LED. The aim of this project is to show how batteries work. To see more how this will work it would be easier tohave more lemons, to turn the red LED. Lemons cannot produce so much energy to turn on the big light bulbs.

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