AQA A Level Chemistry复习笔记7.3.5 Acylation
Acyl Groups Acyl groups Acyl groups can be built into many molecules using acyl chlorides or acid anhydrides (known as acylating agents) Acyl chlorides are derivatives of carboxylic acids by...
AQA A Level Chemistry复习笔记7.3.4 Ester Hydrolysis
Ester Hydrolysis Hydrolysis of Esters - Acid The reverse of the esterification reaction is called hydrolysis Ester hydrolysis is a useful reaction for creating biodegradable plastics Esters ...
AQA A Level Chemistry复习笔记7.3.3 Biodiesel
Biodiesel Biodiesel Biodiesel is made from renewable vegetable oils rather than non sustainable petrochemicals Natural triglyceride oils are converted to esters of methanol, which makes them...
AQA A Level Chemistry复习笔记7.3.2 Esters
Esters Esters Esters are a carboxylic acid derivative which contains the ester group, -COO- An ester is named after the parent carboxylic acid from which it is derived Remove the -oic acid suffix f...
AQA A Level Chemistry复习笔记7.2.3 Nucleophilic Addition
Nucleophilic Addition Many of the reactions which carbonyl compounds undergo are nucleophilic addition reactions The carbonyl group -C=O, in aldehydes and ketones is polarised The oxygen ato...
AQA A Level Chemistry复习笔记7.2.2 Reduction of Carbonyls
Reduction of Carbonyls Reduction of Carbonyls There are a large number of reducing agents which will reduce both an aldehyde and a ketone to an alcohol Aldehydes are reduced to primary alcoh...
AQA A Level Chemistry复习笔记7.1.3 Racemic Mixtures
Racemic Mixtures Net Optical activity Let’s suppose that in a solution, there is 20% of the enantiomer which rotates the plane polarised light clockwise and 80% of the enantiomer which rotat...
AQA A Level Chemistry复习笔记7.1.2 Identifying Chiral Centres
Identifying Chiral Centres Identifying chiral centres in a molecule takes a bit of practice whether it is from a formula, a 2D drawing or a 3D drawing To be successful you need to differenti...
热门专业A-Level选课推荐，附2022-2023 A-Level考试时间
A-Level课程，就是英国本土的高中课程。具有引进时间早、“能偏科”、“重刷题”的特点，是很多留学生的首选。 不过A-Level多达70多门课程，主要分为： 1.核心基础课程：主要有数学、物理、化学、生物、地理; 2.核心...
