AQA A Level Chemistry复习笔记7.11.3 Column Chromatography
Column Chromatography Column Chromatography In column chromatography, the column is often a long vertical glass tube or in the laboratory a burette is suitable An inert solid (usually powder...
AQA A Level Chemistry复习笔记7.11.2 Thin Layer Chromatography
Thin Layer Chromatography Thin-layer chromatography (TLC) is a technique used to analyse small samples via separation For example, we could separate a dye out to determine the mixture of dye...
AQA A Level Chemistry复习笔记7.10.3 ¹³C NMR
¹³C NMR Nuclear Magnetic Resonance (NMR) spectroscopy is used for analysing organic compounds Atoms with odd mass numbers usually show signals on NMR For example, isotopes of atoms Many of t...
AQA A Level Chemistry复习笔记7.10.2 ¹H NMR
¹H NMR Features of a 1H NMR spectrum NMR spectra shows the intensity of each peak against their chemical shift The area under each peak gives information about the number of protons in a par...
英国TOP大学不认可哪些A-Level课程？附ALEVEL选课原则
A-Level课程，就是英国本土的高中课程。具有引进时间早、“能偏科”、“重刷题”的特点，是很多留学生的首选。 不过A-Level多达70多门课程，主要分为： 1.核心基础课程：主要有数学、物理、化学、生物、地理; 2.核心...
A-Level美国大学换学分攻略
在众多家长学生眼里，A-Level申英国，AP申美国，八竿子打不着。 好吧，说个留学过期冷知识：A-Level，IB，AP都可以英美同申。而且A-Level可以在部分美国大学换分~ 事实上，A-Level课程的作用非常大，在美国和AP课...
AQA A Level Chemistry复习笔记7.7.5 Anticancer Drugs
Action of Anticancer Drugs In the 1960s the drug cis-platin was discovered, which has been extremely effective in treating a number of different types cancer such as testicular, ovarian, cer...
AQA A Level Chemistry复习笔记7.7.4 DNA
DNA The nucleic acid DNA is a polynucleotide – it is made up of many nucleotides bonded together in a long chain A nucleotide is a building block consisting of a phosphate group, 2-deoxyribo...
AQA A Level Chemistry复习笔记7.7.3 Enzymes
Enzymes Enzymes are biological catalysts ‘Biological’ because they function in living systems ‘Catalysts’ because they speed up the rate of chemical reactions without being used up or change...
