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Post on 08-Aug-2015
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A mixture consisting of 78% nitrogen, 21% oxygen and 1% other gases &
water vapour.
air
A mixture of metals, e.g. brass.
alloy
The temperature at which a liquid changes to a gas.
Water boils at 100ºC
boiling point
A method of separating substances.The substances are separated as they move, in a solvent, through a material, e.g. paper.
The substances often move at different speeds.
chromatography
A piece of apparatus which coolsa gas to change it to a liquid.
condenser
A valuable mixture of many different hydrocarbons. Many
useful chemicals can be extracted from it.
crude oil
The process that occurs when a solute is added to a suitable solvent, e.g. salt will dissolve in water.
dissolve
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