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Organic Chemistry (Alkanes (complete combustion (alkane + oxygen -->…
Organic Chemistry
Alkanes
Homologous series = family of molecules with similar chemical properties and trends in physical properties
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In ultraviolet light, methane reacts with halogen molecules such as chlorine and bromine
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Alkenes
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Decolourising of bromine water is a test for alkenes - this is because the bromine molecules, which are orange, are reacting with the alkene to make a dibromoalkane, which is colourless
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When you shake an alkene with orange bromine water, the solution becomes colourless
Addition polymers
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Poly(ethene) = plastic bags, washing up liquid bottles
Poly(propene) = bleach bottles, trays, plastic crates, rope, plastic pipes
Poly(chloroethene) = water pipes, insulation on electricity cables
Disposing polymers = nonbiodegradable, synthetic
Crude Oil
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Small molecules = low boiling point, very volatile, flows easily, ignites easily
Large molecules = high boiling point, not very volatile, does not flow easily, does not ignite easily
Cracking
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Fractional distillation of crude oil more long chain hydrocarbons tha can be used directly and fewer short chain hydrocarbons
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Conditions = heat and catalyst (silica, aluminia)
Carbon Monoxide
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A lack of oxygen in the blood can lead to fainting, a coma or even death
Acid Rain
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when sulphur dioxide/nitrogen oxide mixes with clouds and forms sulphuric acid/nitric acid which causes acid rain
