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Benzene

Benzene is an organic chemical compound discovered in 1823 by Faraday.

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Fuel cell

The fuel cell is an electrochemical energy converter. It produces electricity from external supplies of fuel such as hydrogen. Fuel cells can work almost continuously as long as the amount of fuel stays constant.

Petroleum

Petroleum in its natural form before it is processed is known as crude oil, the colour can be green, black, dark, brown or clear, thick like tar or thin like gasoline; and are liquid under normal conditions of temperature and pressure

Polymer

Polymer. Natural polymers are biodegradable. Formed naturally in all living organism, both in plants and animals; made from elements such as carbon, hydrogen, nitrogen and oxygen. In animals, natural polymers are found in muscles skin, silk, hair, wool and fur.