AQA A Level Chemistry复习笔记3.7.5 Electrophilic Addition
Mechanism: Electrophilic Addition Electrophilic addition Alkenes undergo electrophilic addition reactions In an electrophilic addition reaction, two reactants form only one product So, elect...
AQA A Level Chemistry复习笔记3.7.4 Elimination
Mechanism: Elimination In an elimination reaction, a small molecule is removed leaving behind an alkene This is another reaction of halogenoalkanes The halogenoalkanes are?heated?with?ethano...
AQA A Level Chemistry复习笔记3.7.3 Nucleophilic Substitution
Mechanism: Nucleophilic Substitution A?nucleophile?is an electron-rich species that can?donate?a pair of electrons ‘Nucleophile’ means ‘nucleus/positive charge loving’ as nucleophiles are at...
AQA A Level Chemistry复习笔记3.7.2 Chlorination of Alkanes
Mechanism: Free Radical Substitution Chain reactions A?free radical?is a species with one (or more than one) unpaired electrons The diagram shows a free radical which has one unpaired electr...
AQA A Level Chemistry复习笔记3.6.2 Mass spectrometry
Interpreting a Mass Spectrum Mass spectroscopy?is an analytical technique used to identify unknown compounds The molecules in the small sample are?bombarded?with high energy electrons which ...
AQA A Level Chemistry复习笔记3.5.5 Elimination Reactions of Alcohols
Elimination Reactions Elimination Reaction of Alcohols Alcohols can also undergo?dehydration?to form alkenes This is an example of an elimination reaction Elimination reactions involve a sma...
AQA A Level Chemistry复习笔记3.5.4 Combustion of Alcohols
Combustion of Alcohols Combustion of alcohols Alcohols react with oxygen in the air when ignited and undergo?complete combustion?to form carbon dioxide and water alcohol + oxygen → carbon di...
AQA A Level Chemistry复习笔记3.5.3 Oxidation of Alcohols
Oxidation of Alcohols Oxidation of alcohols Primary alcohols can be oxidised to form?aldehydes?which can undergo further oxidation to form?carboxylic?acids Secondary alcohols can be oxidised to for...
AQA A Level Chemistry复习笔记3.5.2 Alcohol Production
Alcohol Production Alcohols?are compounds that contain at least one?hydroxy?(-OH) group The general formula of alcohols is?CnH2n+1OH Alcohols can be prepared by a wide range of chemical reac...
