Edexcel IGCSE Maths复习笔记 1.13.1 Standard Form - Basics What is standard form? Standard Form (sometimes called Standard Index Form) is a way of writing very big and very small numbers using power...
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 ...
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...
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...
Edexcel IGCSE Maths复习笔记 1.12.2 Calculations using Bounds What are bounds? Bounds are the smallest – the Lower Bound (LB) – and largest – the Upper Bound (UB) – numbers that a rounded number can...
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...
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...
CB发布公告，从2023年起，AP宏观经济考试内容做出重要调整。 为什么要调整呢？我们经济老师总结下来： 与时俱进，补上漏洞，纠正错误 AP经济是一门非常和实际生活相关的课，在之前的教学过程中，我们老师就已经发...
01出分时间 根据官网信息，2022年AP考试放分时间为7月5日。 查询网站为： https://apstudents.collegeboard.org/view-scores 02如何向学校递交成绩1.CB可以帮你把成绩免费寄到指定的一所学校。只需登录AP账号，选...
