AQA A Level Chemistry復(fù)習(xí)筆記7.3.3 Biodiesel
Biodiesel Biodiesel Biodiesel is made from renewable vegetable oils rather than non sustainable petrochemicals Natural triglyceride oils are converted to esters of methanol, which makes them...
AQA A Level Chemistry復(fù)習(xí)筆記7.3.2 Esters
Esters Esters Esters?are?a carboxylic acid derivative?which contains the?ester group, -COO- An ester is named after the parent carboxylic acid from which it is derived Remove the -oic acid suffix f...
AQA A Level Chemistry復(fù)習(xí)筆記7.2.3 Nucleophilic Addition
Nucleophilic Addition Many of the reactions which carbonyl compounds undergo are nucleophilic addition reactions The carbonyl group -C=O, in aldehydes and ketones is polarised The oxygen ato...
全球網(wǎng)絡(luò)搜索量最多的10所英國(guó)大學(xué)！
英國(guó)有超過(guò)150所高等院校，你有沒(méi)有想過(guò)，哪些大學(xué)是全球網(wǎng)絡(luò)搜索量最多的？Erudera 團(tuán)隊(duì)對(duì)這個(gè)問(wèn)題進(jìn)行了研究，收集并分析了關(guān)于英國(guó)每所高等教育機(jī)構(gòu)在互聯(lián)網(wǎng)上的搜索次數(shù)的數(shù)據(jù)，得出了一份全球互聯(lián)網(wǎng)搜索量最...
AQA A Level Chemistry復(fù)習(xí)筆記7.2.2 Reduction of Carbonyls
Reduction of Carbonyls Reduction of Carbonyls There are a large number of reducing agents which will reduce both an aldehyde and a ketone to an alcohol Aldehydes are reduced to primary alcoh...
AQA A Level Chemistry復(fù)習(xí)筆記7.1.3 Racemic Mixtures
Racemic Mixtures Net Optical activity Let’s suppose that in a solution, there is 20% of the enantiomer which rotates the plane polarised light?clockwise?and 80% of the enantiomer which rotat...
AQA A Level Chemistry復(fù)習(xí)筆記7.1.2 Identifying Chiral Centres
Identifying Chiral Centres Identifying chiral centres in a molecule takes a bit of practice whether it is from a formula, a 2D drawing or a 3D drawing To be successful you need to differenti...
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A-Level課程，就是英國(guó)本土的高中課程。具有引進(jìn)時(shí)間早、“能偏科”、“重刷題”的特點(diǎn)，是很多留學(xué)生的首選。 不過(guò)A-Level多達(dá)70多門課程，主要分為： 1.核心基礎(chǔ)課程：主要有數(shù)學(xué)、物理、化學(xué)、生物、地理; 2.核心...
AQA A Level Chemistry復(fù)習(xí)筆記6.3.2 Reactions with Bases
Reactions with Bases The differences in the the chemistry of +2 and +3 aqua ions can be seen in their reactions with bases The reactions of iron(II), iron(III), copper(II) and aluminium with...
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AQA A Level Chemistry復(fù)習(xí)筆記6.2.7 Catalysis
Catalysis Catalysts play an important part in industry allowing reactions to be carried out more quickly and at lower temperatures There are two types of catalysts,?heterogeneous?and?homogen...
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CAIE劍橋國(guó)際考評(píng)中心ALevel物理（9702）從2022年起重新修改了考試大綱。A2部分新增了兩大塊兒全新的內(nèi)容，PET scanning和Astronomy & Cosmology。今天帶大家總結(jié)Astronomy & Cosmology部分的五個(gè)部分，...
