Alkenes are hydrocarbons, 4 points about hydrocarbons.
made up of hydrogen and carbon ONLY. same chemical properties, general formula and their physical properties gradually change, different alkanes have chains of different lengths.
complete combustion is when there is plenty of oxygen, whats the equation?
alkane+oxygen--> C02+ water (+energy) BURNS WITH BLUE FLAME
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incomplete combustion happens when theres a lack of oxygen, whats the equation?
alkane+oxygen-->carbon + carbon monoxide+carbon dioxide+water. BURNS WITH SMOKY YELLOW FLAME.
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Describe what happens when halogens react with alkanes to make haloalkanes.
halogens react with alkane in presence of ultra violet, in these reactions a hydrogen atom from the alkane is substituted by chlorine or bromine, so this is a substitution reaction.
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3 points on alkenes.
hydrocarbons with =. unsaturated molecules because they can make more bonds. CnH2n
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Halogens can react with alkenes to make? why are these called additional reactions?
haloalkenes, because the = bond is split and a halogen atom is added to each of the carbons.
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