Rain with dissolved pollutants such as sulphur dioxide that make the rain acidic. - acid rain, A fuel made from living things – usually from plants grown as a crop. - bio-fuel, Another word for burning. A chemical reaction between a fuel and oxygen that gives out heat. - combustion, When a fuel burns with a good supply of oxygen to form carbon dioxide and water. - complete combustion, The natural form of the fossil fuel oil. A mixture of hydrocarbons. - crude oil, Turning salt water into fresh water; ‘taking out the salt’. - desalination, Coal, oil gas; fuels that formed millions of years ago from the remains of plants and tiny animals. - fossil fuel, A form of distillation that does not give complete separation, but various fractions. - fractional distillation, A tall tower used in industrial fractional distillation. Different fractions condense at different levels. - fractional column, A rise in the average temperature of the Earth that could lead to climate change, with more storms or droughts in different parts of the world. - global warming, A compound made from carbon and hydrogen atoms only. - hydrocarbon, Use the same material over and over again. - recycle, Something that is left behind. For example, when wood burns it leaves a residue of ash. - residue, Being able to keep doing the same thing over and over again without causing harm to the environment. - sustainability, How thick or runny a liquid is. Low viscosity is very runny, high viscosity is thick. - viscosity,

Y10 OILS AND FUELS

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