1) Propene is a saturated hydrocarbon. 2) Ethene is made by heating long-chain alkanes to a high temperature in the presence of a catalyst. 3) Hexene reacts with aqueous bromine, changing its colour from colourless to orange. 4) Ethene, propene and butene have the same general formula.
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Which statements about alkenes are correct?
1) Propene is a saturated hydrocarbon.
2) Ethene is made by heating long-chain alkanes to a high temperature in the presence of a catalyst.
3) Hexene reacts with aqueous bromine, changing its colour from colourless to orange.
4) Ethene, propene and butene have the same general formula.
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