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Core Practical 5: Oxidation of Ethanol Oxidation of ethanol Primary alcohols can be oxidised to form aldehydes which can undergo further oxidation to form carboxylic acids When ethanol is ox...
Edexcel A Level Chemistry:复习笔记4.2.1 Hydrolysis of Halogenoalkanes
Core Practical 4: Investigating Halogenoalkane Hydrolysis Halogenoalkanes can be hydrolysed with an aqueous solution of sodium hydroxide (NaOH) or potassium hydroxide (KOH) This reaction is ...
Edexcel A Level Chemistry:复习笔记4.1.4 Determining Enthalpy Change of Reaction
Core Practical 8: Determining Enthalpy Change of Reaction Measuring enthalpy changes Calorimetry is a technique used to measure changes in enthalpy of chemical reactions A calorimeter can be...
Edexcel A Level Chemistry:复习笔记4.1.3 Determining Concentrations
Core Practical 3: Hydrochloric Acid Concentration Performing the Titration The key piece of equipment used in the titration is the burette Burettes are usually marked to a precision of 0.10 ...
Edexcel A Level Chemistry:复习笔记4.1.2 Standard Solutions
Core Practical 2: Preparing a Standard Solution Volumetric Analysis Volumetric analysis is a process that uses the volume and concentration of one chemical reactant (a volumetric solution) t...
Edexcel A Level Chemistry:复习笔记4.1.1 Molar Volume of a Gas
Core Practical 1: Measuring the Molar Volume of a Gas Measuring gas volumes The volume of gas produced in a reaction can be measured by collecting the gas with a gas syringe or by the displa...
UCAS2023年英本申请重要时间节点！
英美作为艺术留学的主流国，一直是国内艺术留学家庭青睐的首选国家。英国本科的UCAS网申系统本月6日已正式开放！原则上，所有英国大学的所有本科学位课程，包括专升本，都要通过UCAS申请。 2023UCAS申请时间线 20...
2022美国规模最大的女生数学赛事Math Prize for Girls 10月将在MIT举行！
美国规模最大的女生数学赛事， Math Prize for Girls 将于10月在MIT举办！ 或许你对它有些陌生， 不过它和大家所熟悉的AMC有着不可分割的关系！ 一起来了解一下吧！ Math Prize for Girls 该赛事活动接受美国及加...
NEC 2023报名正式启动，10月15日前可享早鸟优惠！NEC组队等你来
NEC全美经济学挑战报名启动 截止日期：11月30日 10月15日前可享受早鸟价优惠 报名费立减100元！ 全球历史最悠久的经济学活动 让全世界看到中国青年学子的能力 通往国际的舞台已为你打开大门 欢迎加入2023 NEC...
