AQA A Level Chemistry復習筆記3.4.3 Reactions of Alkenes
Alkenes: Reactions Alkenes are very useful compounds as they can undergo many types of reactions They can therefore be used as starting molecules when making new compounds Electrophilic addi...
AQA A Level Chemistry復習筆記3.4.2 Isomerism in Alkenes
Isomerism in Alkenes Unsaturated compounds In unsaturated compounds, the groups attached to the C=C carbons remain fixed in their position This is because free rotation of the bonds about th...
AQA A Level Chemistry復習筆記3.3.3 Ozone Depletion
Uses Fluorohalogenoalkanes The most common?halogenoalkanes?are?chlorofluorocarbons?(CFCs) These compounds contain carbon atoms with chlorine and fluorine atoms attached to them E.g. CCl3F an...
AQA A Level Chemistry復習筆記3.3.2 Reactions of Halogenoalkanes
The Key Reactions of the Halogenoalkanes Types of Reactions that halogenoalkanes undergo: Halogenoalkanes?are much more reactive than alkanes due to the presence of the?electronegative?halog...
AQA A Level Chemistry復習筆記3.2.4 Chlorination of Alkanes
Free Radical Substitution ?Free-radical substitution of alkanes Alkanes can undergo?free-radical substitution?in which a hydrogen atom gets?substituted?by a halogen (chlorine/bromine) Since ...
AQA A Level Chemistry復習筆記3.2.3 Combustion of Alkanes
Combustion Alkanes are?combusted?(burnt) on a large scale for their use as fuels Complete combustion When alkanes are burnt in?excess?(plenty of) oxygen,?complete combustion?will take place ...
AQA A Level Chemistry復習筆記3.2.2 Modification of Alkanes by Cracking
Cracking Alkanes?are hydrocarbons that can be produced by the?addition?reaction?of hydrogen to an alkene or by?cracking?of longer alkane chains Crude oil Crude oil is a?mixture?of hydrocarbo...
AQA A Level Chemistry復習筆記3.1.5 Stereoisomerism
Stereoisomerism: Geometrical Isomerism Stereoisomers?are compounds that have the same atoms connected to each other, however the atoms are differently arranged in space There are two types o...
AQA A Level Chemistry復習筆記3.1.4 Structural Isomerism
Molecules: Straight, Branched & Cyclic Straight, branched and cyclic organic molecules are also called?aliphatic?compounds as long as they do not contain a?benzene ring Straight-chain St...
