CIE A Level Chemistry复习笔记4.1.2 Mass Spectrometry
Interpreting Mass Spectra Mass spectroscopy is an analytical technique used to identify unknown compounds The molecules in the small sample are bombarded with high energy electrons which can cause ...
CIE A Level Chemistry复习笔记4.1.1 Infra-Red Spectroscopy
Interpreting IR Spectra Infrared (IR) spectroscopy is a technique used to identify compounds based on changes in vibrations of atoms when they absorb IR of certain frequencies A spectrophotometer i...
CIE A Level Chemistry复习笔记3.9.3 Synthetic Routes
Analysis of Synthetic Routes Students should be able to critically analyse given synthetic routes and determine whether appropriate reagents and reaction conditions are used Students should also be...
CIE A Level Chemistry复习笔记3.9.2 Multi-Step Synthesis
Multi-step Synthetic Routes Many organic molecules are made in multi-step synthetic routes Students should be able to recall the different reactions each functional group undergoes and apply this k...
CIE A Level Chemistry复习笔记3.9.1 Organic Synthesis
Elucidating Organic Molecules You are expected to be able to identify organic functional groups, their properties, how to test for their presence and how they are made Functional groups The table b...
CIE A Level Chemistry复习笔记3.8.2 Disposal of Polymers
Disposal of Polymers Though poly(alkenes)s are extremely important in everyday such as their use as plastics, the disposal of these polymers is problematic Poly(alkenes) are very large alkane molec...
高中生高含金量计算机竞赛盘点！
在STEM专业申请难度水涨船高的趋势中，计算机专业始终是STEM中“热上加热”的专业，高就业率、高薪资是它的代名词。 对于喜欢计算机专业的留学预备党来说，参加高含金量计算机国际学术活动不仅可以提升计算机硬实力...
CIE A Level Chemistry复习笔记3.8.1 Addition Polymerisation
Addition Polymerisation: Polythene & PVC Addition polymerisation Addition polymerisation is one of the most important addition reactions of alkenes which form the basis of the plastic industry ...
CIE A Level Chemistry复习笔记3.7.2 Nitriles & Hydroxynitriles
Production of Nitriles Nitriles are compounds with a -CN functional group They can be prepared from the nucleophilic substitution of halogenoalkanes Propanenitrile, an example of a nitrile Reaction...
