Using Mass Spectra At AS level, you have used mass spectrometry to determine: Relative atomic mass from isotopic abundance Possible molecular formulae from molecular ion peaks Organic struct...
Melting & Boiling Point Determination Melting point determination The melting point of a solid is indicative of its purity and identity A melting point can be matched to a known substanc...
化學(xué)愛好者心中的No.1—UKChO學(xué)術(shù)活動(dòng)，能在該賽事中脫穎而出的同學(xué)，可大幅度提升申請牛劍G5的成功率。需要提醒的是，2023年ukcho學(xué)術(shù)活動(dòng)時(shí)間已開啟報(bào)名！感興趣的同學(xué)一定要抓緊時(shí)間準(zhǔn)備！報(bào)名通道已開啟，想要...
Purification Methods There are different methods to purify organic compounds, including: Solvent extraction / use of a separating funnel Use of drying agents Recrystallisation Solvent extrac...
Distillation & Refluxing Simple distillation Simple distillation is a common practical completed in organic chemistry It is used as there are times that a reaction does not go to complet...
Grignard Reagents If we need to increase the chain length we can use?Grignard reagents Preparing Grignard reagents? A halogenoalkane is dissolved in dry ether and reacted with magnesium to p...
Planning Reaction Schemes A large number of organic products are made from a few starting compounds using appropriate reagents and conditions Knowing how organic functional groups are relate...
Deducing Organic Structures You will be expected to deduce the empirical, molecular and structural formulae of compounds from data such as: Combustion analysis Elemental percentage compositi...
近幾年來，美本競爭不斷白熱化，SAT/ACT、托福、GPA這些標(biāo)化成績已經(jīng)很難讓同學(xué)們在龐大的留學(xué)生群體中脫穎而出。這個(gè)時(shí)候，就需要一些活動(dòng)學(xué)術(shù)活動(dòng)來幫助同學(xué)們提升“軟背景”，提高申請競爭力。今天要介紹的美國A...
在眾多的國際思維挑戰(zhàn)活動(dòng)當(dāng)中，美國AMC數(shù)學(xué)近年來可以說是火爆全球，成為名校申請的敲門磚！近日，中國區(qū)2022-2023學(xué)年AMC10/12活動(dòng)已全面開啟報(bào)名！ AMC學(xué)術(shù)活動(dòng)報(bào)名方式 兩種報(bào)名方式如下： AMC中國區(qū)組委會(huì) ...
Properties of 2-Amino Acids Acid / base properties of amino acids Amino acids will undergo most reactions of amines and carboxylic acids including acid-base reactions of: Amines with acids C...
Condensation Polymers Condensation polymerisation is another type of reaction whereby a polymer is produced by repeated condensation reactions between monomers Natural condensation polymers ...
