Homologous Series & Functional Groups Homologous series A homologous series is a group of organic compounds that have the same functional group, but each successive member differs by CH2...
Formulae of Organic Compounds Organic chemistry is the chemistry of carbon compounds Carbon forms a vast number of compounds because it can form strong covalent bonds with itself This enable...
今天老师要和大家介绍一门不需要考试的课程—EPQ。epq课程是什么意思？是否有必要学习？含金量如何？ 什么是EPQ？ EPQ是英国考试局(Edexcel, OCR, AQA and CIE)提供的带证书的项目课程，项目所得分数相当于半个学...
CAIE 2022年A-Level夏季大考A*率终于出炉！和2021年相比，今年高数、生物等科目压分严重，位居A*率榜首的是中文，A*率达到了63.2%。今天我们就来详细介绍一下2022年A*率排名前三的中文、高数、化学科目~ 一、中文...
Halide Ion Reactions Concentrated sulfuric acid Chloride, bromide and iodide ions react with concentrated sulfuric acid to produce toxic gases These reactions should therefore be carried out...
Halogen Redox Reactions Reactions with Group 1 & 2 metals The halogens react with some metals to form ionic compounds which are metal halide salts In all reactions where halogens are rea...
Halogen Displacement Reactions The reactivity of halogens is also shown by their displacement reactions with other halide ions in solutions A more reactive halogen can displace a less reacti...
Physical Properties The Group 7 elements are called halogens The halogens have uses in water purification and as bleaching agents (chlorine), as flame-retardants and fire extinguishers (brom...
Flame Tests Metal ions produce a colour if heated strongly in a flame Ions from different metals produce different colours The flame test is thus used to identify metal ions by the colour of...
