Edexcel IGCSE Maths复习笔记 1.12.1 Bounds & Error Intervals - Basics What are bounds? Bounds are the smallest – the Lower Bound (LB) – and largest – the Upper Bound (UB) – numbers that a rounde...
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Aliphatic Amines Amines Amines can be thought of as derivates of ammonia, in which one or more of the hydrogens is replaced by an alkyl or aryl group The number of substituted hydrogens is t...
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Edexcel IGCSE Maths 复习笔记 1.11.1 Ratios What is a ratio? A ratio is a way of comparing one part of a whole to another A ratio can also be expressed as a fraction (of the whole) We often use a ra...
Condensation Polymers Addition polymerisation has been covered in reactions of alkenes They are made using monomers that have C=C double bonds joined together to form polymers such as polyet...
Amino Acids Amino acids are organic compounds that contain two functional groups: A basic amino (-NH2) group An acidic carboxylic acid (-COOH) group Due to the presence of both a basi...
Organic Synthesis It is possible to make a large number of organic products from a few starting compounds and the necessary reagents and conditions Knowing how organic functional groups are ...
Organic Mechanisms Organic Mechanisms Throughout the A Level course you have met a number of organic mechanisms You must be able to provide these in full if asked for You must be able to app...
Principles of NMR Nuclear Magnetic Resonance (NMR) spectroscopy is used for analysing organic compounds NMR analysis can provide information about the positions of 13C and 1H atoms in a mole...
Principles of Chromatography Principles of Chromatography Chromatography is a technique that enables the separation of mixtures and includes: thin-layer chromatography (TLC) column chromatog...
