AQA A Level Chemistry復(fù)習(xí)筆記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...
Edexcel IGCSE Maths復(fù)習(xí)筆記 1.12.2 Calculations using Bounds
Edexcel IGCSE Maths復(fù)習(xí)筆記 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...
AQA A Level Chemistry復(fù)習(xí)筆記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...
Edexcel IGCSE Maths復(fù)習(xí)筆記 1.12.1 Bounds & Error Intervals - Basics
Edexcel IGCSE Maths復(fù)習(xí)筆記 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...
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CB發(fā)布公告，從2023年起，AP宏觀經(jīng)濟考試內(nèi)容做出重要調(diào)整。 為什么要調(diào)整呢？我們經(jīng)濟老師總結(jié)下來： 與時俱進，補上漏洞，糾正錯誤 AP經(jīng)濟是一門非常和實際生活相關(guān)的課，在之前的教學(xué)過程中，我們老師就已經(jīng)發(fā)...
7月5日AP放分，附取消成績和復(fù)議成績方法
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AQA A Level Chemistry復(fù)習(xí)筆記7.5.1 Preparation of Amines
Aliphatic Amines Amines Amines?can be thought of as derivates of ammonia, in which one or more of the hydrogens is replaced by an alkyl or aryl group The number of substituted hydrogens is t...
Edexcel IGCSE Maths 復(fù)習(xí)筆記 1.11.1 Ratios
Edexcel IGCSE Maths 復(fù)習(xí)筆記 1.11.1 Ratios What is a ratio? A?ratio?is a way of comparing one part of a whole to another A?ratio?can also be expressed as a?fraction?(of the whole) We often use a ra...
AQA A Level Chemistry復(fù)習(xí)筆記7.6.1 Condensation Polymers
Condensation Polymers Addition polymerisation has been covered in reactions of alkenes They are made using monomers that have C=C double bonds joined together to form polymers such as polyet...
