Dry Cell

Categorie: Engleza
Data adăugării: 05.10.2011
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project dry cell
author costea irina mihaela
course chemistry
class 10a












dry cell
dry cell plural dry cells noun part of a battery a current-generating electric cell that cannot be regenerated and contains an electrolyte in the form of a paste or within a porous material to keep it from spilling.
the most common form of primary cell is the leclanch cell, invented by the french chemist georges leclanch in the 1860s. it is popularly called a dry cell or flashlight battery. the leclanch cell in use today is very similar to the original invention. the electrolyte consists of a mixture of ammonium chloride and zinc chloride made into a paste. the negative electrode is made of zinc, as is the outside shell of the cell, and the positive electrode is a carbon rod surrounded by a mixture of carbon and manganese dioxide. the leclanch cell produces about...

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