英国A-level大考成绩或将延期公布，这对中国的国际学校考生有何影响？
近日，英国《卫报》报道，由于AQA考试局宣布72小时罢工，今年夏天的GCSE 和 A - level 考试分数或将推迟发布。这对中国的国际学校考生有何影响？ 考试局罢工，大考成绩延迟发布？ 据《卫报》报道，AQA考试委员会...
IB DP Chemistry: HL复习笔记16.2.3 Activation Energy from Rate Constants
Activation Energy from Rate Constants at Different Temperatures Arrhenius Plots Arrhenius plots for two reactions with different activation energies can be drawn on the same graph Arrhenius plots f...
IB DP Chemistry: HL复习笔记16.2.2 Graphing the Arrhenius Equation
Graphing the Arrhenius Equation Finding the Activation Energy Very often, the Arrhenius equation is used to calculate the activation energy of a reaction A question will either give sufficient info...
IB DP Chemistry: HL复习笔记16.2.1 The Arrhenius Equation
The Arrhenius Equation The rate equation shows how each of the reactants in a reaction effects the rate of the reaction and it includes the rate constant, k However, k only remains constant if the ...
IB DP Chemistry: HL复习笔记16.1.5 Mechanism Problems
Mechanism Problems Chemical kinetics can only suggest a reaction mechanism, they cannot prove it However, they can be used to disprove a proposed mechanism Elementary steps are the steps involved i...
NSS官方发布2022年英国大学满意度调查结果！
近日全英学生调查 (NSS) 发布了2022年英国大学满意度调查结果，324329名学生参加了调查，英国每所大学都会参与NSS，还有一些学院和其他高等教育机构也参与其中。 英国学生办公室 (OfS) 表示，NSS收集学生对课程质...
IB DP Chemistry: HL复习笔记16.1.4 Rate Determining Step
Molecularity & Rate Determining Step Rate-determining step & intermediates A chemical reaction can only go as fast as the slowest part of the reaction So, the rate-determining step is the s...
IB DP Chemistry: HL复习笔记16.1.3 Graphical Representations
Graphical Representations of Reaction Order Reaction Order Using Concentration-Time Graphs In a zero-order reaction, the concentration of the reactant is inversely proportional to time This means t...
IB DP Chemistry: HL复习笔记16.1.2 Rate Constants
Rate Constants The rate constant, (k), of a reaction can be calculated using the initial rates and the rate equation Calculating the rate constant from the initial rate The reaction of sodium carbo...
