IB DP Chemistry: HL复习笔记10.2.12 Halogenoalkanes
Reactions of Halogenoalkanes Halogenoalkanes are much more reactive than alkanes due to the presence of the electronegative halogens The halogen-carbon bond is polar causing the carbon to carry a p...
IB DP Chemistry: HL复习笔记10.2.11 Alcohols - Esterification
Esterification Esters are compounds with an -COOR functional group and are characterised by their sweet and fruity smells They are prepared from the condensation reaction between a carboxylic acid ...
英国大学关于AP考试取消的回复
前段时间的AP放榜可谓是几家欢喜几家愁，5分的成绩单满朋友圈的飞，翰林也发出了2022年AP年度盘点！翰林送出近2万元的5分奖学金！ 但还有很多同学依旧沉浸在AP考试被取消的阴影中。 受疫情的影响，今年5月上海、...
IGCSE课程难度如何？IGCSE六大学科难度盘点！
IGCSE课程难度如何？ 客观来说，这个问题无法一概而论。每个学科都有不同的课程体系和考试特点，我们还是要具体问题具体分析。 今天我们以CIE考试局为例，针对IGCSE几大热门学科，为大家做下全方位的难度解析。 ...
IB DP Chemistry: HL复习笔记10.2.10 Alcohols - Oxidation
Oxidation of Primary Alcohols The products of oxidation of alcohols depends on the class of alcohols Here is a reminder of the three classes of alcohols: The three classes of alcohols Primary alcoh...
AQA A Level Maths: Pure复习笔记3.1.3 Equation of a Straight Line
Equation of a Straight Line What is the equation of a straight line? y = mx + c is the equation for any straight line m is gradient given by “difference in y” ÷ “difference in x” or dy/dx c is the ...
IB DP Chemistry: HL复习笔记10.2.9 Alcohols - Combustion
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 dioxide + water Complete combust...
IB DP Chemistry: HL复习笔记10.2.8 Addition Polymers
Polymers Addition polymerisation Addition polymerisation is one of the most important addition reactions of alkenes which form the basis of the plastic industry Addition polymerisation is the react...
IB DP Chemistry: HL复习笔记10.2.7 Alkenes - Hydration
Hydration of Alkenes When alkenes are treated with steam at 300 oC, a pressure of 60 atmospheres and sulfuric acid (H2SO4) or phosphoric acid (H3PO4) catalyst, the water is added across the double ...
