2022年U.S.News CS專業TOP10院校介紹
作為世界上計算機知識和技術最發達的國家，計算機科學專業，是美國本科申請中競爭最為激烈的，也是中國家長趨之若鶩的專業之一。 每年，蘋果、騰訊、谷歌、阿里、百度等國內外頂尖科技公司會從全球高薪招聘大量計...
IB DP Chemistry: SL復習筆記10.2.3 Alkenes - Reactivity
Reactivity of Alkenes Alkenes?are?hydrocarbons?containing a carbon-carbon double bond The atoms around the carbon-carbon double bond adopt a?planar arrangement?and the bond angle is 120o The bondin...
IB DP Chemistry: SL復習筆記10.2.2 Alkanes - Halogenation
Halogenation of Alkanes ?Free-radical substitution of alkanes Alkanes can undergo?free-radical substitution?in which a hydrogen atom gets?substituted?by a halogen (chlorine/bromine) Since alkanes a...
IB DP Chemistry: SL復習筆記10.2.1 Alkanes - Combustion
Unreactive 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?stro...
IB DP Chemistry: SL復習筆記10.1.12 Benzene
Benzene Kekulé structure for benzene Kekulé suggested that benzene was a?hexagon?with three double bonds It was therefore equivalent to three?ethene molecules Problems with Kekulé’s structure for b...
IB DP Chemistry: SL復習筆記10.1.11 Primary, Secondary & Tertiary atoms
Primary, Secondary & Tertiary Atoms Alcohols and halogenoalkanes Primary?alcohols?and?halogenoalkanes?are those in which the carbon atom bonded to the? functional group is attached to?one?other...
IB DP Chemistry: SL復習筆記10.1.10 3-D modelling
3-D Modelling Representing?3-D?molecules on a?2D?surface is not easy and the best way to understand?3-D?structures is to use modelling kits or?3-D?modelling software, such as ACD Labs ChemSketch Fo...
IB DP Chemistry: SL復習筆記10.1.9 Organic Families - Organic Nitrogen Compounds
Organic Nitrogen Compounds Amines There are three organic nitrogen families that you need to know:?amines, amides?and?nitriles Amine?is the name given to compounds containing the functional group?a...
IB DP Chemistry: SL復習筆記10.1.8 Organic Families - Carboxylic Acids & Esters
Carboxylic Acids & Esters Carboxylic acids Carboxylic acids?is the name given to compounds containing the functional group?carboxyl, -COOH The general formula of a carboxylic acid is?CnH2n+1COO...
IB DP Chemistry: SL復習筆記10.1.7 Organic Families - Carbonyls
Carbonyls Carbonyl?is the collective name for compounds containing the functional group?C=O The general formula of a carbonyl is?CnH2nO The two sub-families of?carbonyls?are?aldehyde?and?ketone?(kn...
IB DP Chemistry: SL復習筆記10.1.6 Organic Families - Alcohols & Ethers
Alcohols & Ethers Alcohols Alcohols?are a family of molecules that contain the?hydroxyl functional group,?-OH Their general formula is ?CnH2n+1OH The nomenclature of alcohols follows the patter...
IB DP Chemistry: SL復習筆記10.1.5 Organic Families - Halogenoalkanes
Halogenoalkanes Halogenoalkanes?or?Haloalkanes?have the general molecular formula,?CnH2n+1X, where X represents a halogen Haloalkanes?are named using the prefix?chloro-,?bromo-?or?iodo-, with the e...
