4 b) Crude Oil

Rain which has a pH of less than about 5.6 caused when water and oxygen in the atmosphere react with sulphur dioxide to produce sulphuric acid, or with various oxides of nitrogen, NOx, to give nitric acid.

When a hydrocarbon burns in sufficient oxygen and forms carbon dioxide and water.

Process in which long-chain alkanes are converted to alkenes and shorter-chain alkanes using silica/alumina as a catalyst at a temperature of 600-700℃.

Mixture of hydrocarbons.

A process to separate two liquids with similar boiling points.

When a hydrocarbon burns in insufficient oxygen. Water is formed as a product, but carbon monoxide or carbon are formed instead of carbon dioxide.

A finite resource that cannot be replaced (at least not for millions of years).

A device used in cars to convert oxides of nitrogen and carbon monoxide into harmless nitrogen gas and carbon dioxide.

A reaction in which a substance reacts with oxygen (burns) to form products and heat.

Formed from the remains of living organisms by high temperatures and pressures into a thick, black oil. (A mixture of hydrocarbons.)

Include coal, gas and fuels derived from crude oil.

Piece of equipment used for separating vapours in fractional distillation.

A liquid that is resistant to flow.

A substance that evaporates easily.