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...
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AQA A Level Chemistry复习笔记6.3.2 Reactions with Bases
Reactions with Bases The differences in the the chemistry of +2 and +3 aqua ions can be seen in their reactions with bases The reactions of iron(II), iron(III), copper(II) and aluminium with...
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凯斯西储大学怎么样？ 凯斯西储大学由凯斯理工学院和西储大学于1967年合并而成，是美国一所以独立研究闻名的私立大学，共设8个学院，共有100 多个本科课程，约160 个研究生专业及课程，145 个双学位项目可供选择...
AQA A Level Chemistry复习笔记6.2.7 Catalysis
Catalysis Catalysts play an important part in industry allowing reactions to be carried out more quickly and at lower temperatures There are two types of catalysts, heterogeneous and homogen...
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AQA A Level Chemistry复习笔记6.2.6 Redox Titrations
Redox Titrations Redox titration involves an oxidising agent being titrated against a reducing agent Electrons are transferred from one species to another In acid-base titrations indicators ...
AQA A Level Chemistry复习笔记6.2.5 Variable Oxidation States
Variable Oxidation States The table below shows the most common oxidation states of a few transition metals Oxidation states of transition elements table When transition elements form...
AQA A Level Chemistry复习笔记 6.2.4 Formation of Coloured Ions
Colour in Transition Metal Ions Most transition element complexes are coloured The transition metal ions can be identified by their colour The large variety of coloured compounds is a defini...
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我们知道雅思口语考试的Part1部分，基本是围绕着我们的衣食住行等个人信息来展开提问的，问来问去的核心不过就是我们在生活中做了什么事情，喜欢什么事情，为什么做这些事情，为什么喜欢这样些事情等。 每一个人...
