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...
Edexcel IGCSE Maths復(fù)習(xí)筆記 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...
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 What are bounds? Bounds are the smallest – the?Lower Bound (LB)?– and largest – the?Upper Bound (UB)?– numbers that a?rounde...
CB發(fā)布公告，從2023年起，AP宏觀經(jīng)濟(jì)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(jì)老師總結(jié)下來(lái)： 與時(shí)俱進(jìn)，補(bǔ)上漏洞，糾正錯(cuò)誤 AP經(jīng)濟(jì)是一門非常和實(shí)際生活相關(guān)的課，在之前的教學(xué)過(guò)程中，我們老師就已經(jīng)發(fā)...
01出分時(shí)間 根據(jù)官網(wǎng)信息，2022年AP考試放分時(shí)間為7月5日。 查詢網(wǎng)站為： https://apstudents.collegeboard.org/view-scores 02如何向?qū)W校遞交成績(jī)1.CB可以幫你把成績(jī)免費(fèi)寄到指定的一所學(xué)校。只需登錄AP賬號(hào)，選...
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...
近日，美國(guó)教育部College Scorecard網(wǎng)站最新發(fā)布的，基于900多所學(xué)校，100,000多個(gè)大學(xué)學(xué)位課程和超過(guò)500萬(wàn)畢業(yè)生的起薪數(shù)據(jù)，最終確定了各個(gè)大學(xué)薪資排名，及各個(gè)專業(yè)學(xué)位下的院校薪資排行榜。 在專業(yè)排名方面，...
