CIE A Level Chemistry復習筆記3.2.7 Production of Alkenes
Production of Alkenes: Elimination, & Dehydration Reactions & Cracking Alkenes can be made by a series of reactions including?elimination,?dehydration reactions?and?cracking Elimination rea...
CIE A Level Chemistry復習筆記3.2.6 Combustion of Alkanes
Combustion of Alkanes & the Environment Cars’?exhaust fumes?include toxic gases such as?carbon monoxide?(CO),?oxides of nitrogen?(NO/NO2) and?volatile organic compounds?(VOCs) When released int...
CIE A Level Chemistry復習筆記3.2.5 Chemical Reactivity of Alkanes
Unreactivity of Alkanes Strength of C-H bonds Alkanes consist of carbon and hydrogen atoms which are bonded together by?single?bonds Unless a lot of heat is supplied, it is difficult to break these...
CIE A Level Chemistry復習筆記3.2.4 Cracking of Alkanes
Obtaining Useful Compounds by Cracking Crude oil Crude oil is a?mixture?of hydrocarbons containing?alkanes,?cycloalkanes?and?arenes?(compounds with a benzene ring) The crude oil is?extracted?from t...
CIE A Level Chemistry復習筆記3.2.3 Free Radical Substitution
Free Radical Substitution Mechanism Alkanes can undergo?free-radical substitution?in which a hydrogen atom gets?substituted?by a halogen (chlorine/bromine) Ultraviolet?light?(sunlight)?is needed fo...
CIE A Level Chemistry復習筆記3.2.2 Combustion & Free Radical Substitution of Alkanes
Combustion & Free Radical Substitution of Alkanes Alkanes are?combusted?(burnt) on a large scale for their use as fuels They also react in?free-radical substitution?reactions to form more react...
CIE A Level Chemistry復習筆記3.2.1 Alkanes
Production of Alkanes: Hydrogenation & Cracking Alkanes?are hydrocarbons that can be produced by the?addition?reaction?of hydrogen to an alkene or by?cracking?of longer alkane chains Production...
2022年英國經濟專業TOP5院校介紹及專業招生要求
2023年申請季已經到來，大家是否已經有了目標院校和專業呢？ 經濟學一直是備受廣大家長和同學青睞的專業。如果想去英國讀經濟，哪些大學最值得讀呢？ 今天我們就結合三大權威榜單（2022QS世界大學學科排名、2022...
CIE A Level Chemistry復習筆記3.1.13 Isomers of Organic Compounds
Deducing Isomers of a Compound You should be able to deduce all possible isomers for organic compounds knowing their molecular formula Worked example: Isomers of dibromopropane Step 1:?Draw the str...
藝術留學到底好不好？
近年來，隨著設計、藝術行業的發展，人們的審美和藝術需求日益增加，藝術設計領域已經擺脫了小眾的標簽，越來越多人進入這個專業領域，除了對藝術始終保持興趣的藝術生，很多在綜合類學校的非藝術生也中途選擇了...
CIE A Level Chemistry復習筆記3.1.12 Chirality
Chirality & Enantiomers Chiral centres in non-cyclic molecules A?chiral?centre?in a molecule is a carbon atom that has four different atoms or group of atoms attached This gives rise to two opt...
CIE A Level Chemistry復習筆記3.1.11 Stereoisomerism
Stereoisomerism: Geometrical & Optical Stereoisomers?are compounds that have the same atoms connected to each other, however the atoms are differently arranged in space There are two types of?s...
