AQA A Level Physics复习笔记1.1.1 SI Units
SI Base Quantities There is a seemingly endless number of units in Physics These can all be reduced to six base units from which every other unit can be derived These seven units are referre...
AQA A Level Physics复习笔记1.2.1 Sources of Uncertainty
Random & Systematic Errors Measurements of quantities are made with the aim of finding the true value of that quantity In reality, it is impossible to obtain the true value of any quanti...
AQA A Level Chemistry复习笔记8.1.1 Required Practical 7
Required Practical 7 Required Practical 7: Measuring the rate of a reaction There are two ways to measure the rate of reaction By an initial rate method By a continuous monitoring method &nb...
AQA A Level Chemistry复习笔记8.2.1 Required Practical 11
Required Practical 11 Required Practical 11: Carry out simple test-tube reactions to identify transition metal ions in aqueous solution This practical covers a number of key laboratory skill...
AQA A Level Chemistry复习笔记8.3.1 Required Practical 10a
Introduction to required practical 10a Required Practical 10a: Preparation of an organic solid and a test of its purity This practical covers a number of key laboratory skills use appropriat...
AQA A Level Chemistry复习笔记7.1.1 Optical Isomerism
Optical Isomerism Optical isomerism Stereoisomers are molecules that have the same structural formula but have the atoms arranged differently in space There are two types of stereoisomerism ...
AQA A Level Chemistry复习笔记7.2.1 Aldehydes & Ketones
Oxidation of Aldehydes Aldehydes and ketones contain the carbonyl functional group, C=O This is why aldehydes and ketones are also known as carbonyls The difference between aldehydes and ket...
AQA A Level Chemistry复习笔记7.3.1 Carboxylic Acids
Carboxylic Acids Carboxylic acids Carboxylic acid is the name given to the family of compounds that contain the carboxyl functional group, -COOH The general formula of a carboxylic acid is C...
AQA A Level Chemistry复习笔记7.4.1 Structure of Benzene
Structure of Benzene In normal, everyday conversation the word 'aromatic' is used to refer to pleasant, fragrant smells However, in chemistry, it is used to describe molecules that contain o...
