2022年A-Level秋季重考指南！
夏季大考即将放榜。但是如果放榜后，对自己的成绩不满意，也不用就此摆烂，下半年的A-Level考试还可以选择重考，通过参加秋季考试来刷新成绩。 那么，重考对于申请是否有影响？重考有什么规则？接下来，带大家来...
IB DP Chemistry: HL复习笔记8.3.1 Acid Deposition
Acid Deposition What is acid deposition? Rain is naturally acidic because of dissolved CO2 which forms carbonic acid H2O (l) + CO2 (g) ⇌ H2CO3 (aq) Carbonic acid is a weak acid and dissociates in...
2023美本申请系统要求更新！支持CA系统申请的大学进一步增加！
近期，多所大学录取更新申请信息，不少大学更新了2022-2023的申请系统要求，支持Common App系统。今天小编就跟大家分享一下几所重要大学的申请系统更新。 1、华大西雅图改用Common App 2、德州奥斯汀启用Common A...
英国G5申请如何准备规划？附G5院校学术成绩要求
如果将英国大学的申请难度进行划分，G5院校毫无疑问稳居金字塔顶端。 由于申请人数众多，G5不仅整体录取率低迷，热门专业的申请更是难上加难。 G5申请准备赶早不赶晚，很多目标G5的学霸从IG阶段就开始进行有针对...
IB DP Chemistry: HL复习笔记8.2.8 Comparing Strong & Weak Acids
Comparing Strong & Weak Acids Strong and weak acids can be distinguished from each other by their: pH value (using a pH meter or universal indicator) Electrical conductivity Reactivity pH value...
IB DP Chemistry: HL复习笔记8.2.7 Strong & Weak Acids & Bases
Strong & Weak Acids & Bases Strong acids A strong acid is an acid that dissociates almost completely in aqueous solutions HCl (hydrochloric acid), HNO3 (nitric acid) and H2SO4 (sulfuric aci...
英国G5最受欢迎的热门专业是哪些？竞争究竟有多激烈？
如果将英国大学的申请难度进行划分，G5院校毫无疑问稳居金字塔顶端。 由于申请人数众多，G5不仅整体录取率低迷，热门专业的申请更是难上加难。 那么，G5本科那些申请人数最多的专业，竞争究竟有多激烈？我们为你...
IB DP Chemistry: HL复习笔记8.2.6 pH Meters & Universal Indicator
pH Meters & Universal Indicator The most accurate way to determine the pH is by reading it off a pH meter The pH meter is connected to the pH electrode which shows the pH value of the solution ...
IB DP Chemistry: HL复习笔记8.2.5 Acid-Base Calculations
Acid-Base Calculations Using the relationships between pH, [H⁺] and [OH⁻] a variety of problems can be solved pH = - log [H+] and Kw = [H+] [OH-] Test your understanding on the following work...
IB DP Chemistry: HL复习笔记8.2.4 The Ionic Product of Water
The Ionic Product of Water pH of water An equilibrium exists in water where few water molecules dissociate into proton and hydroxide ions H2O(l) ⇌ H+(aq) + OH-(aq) The equilibrium constant for this...
IB DP Chemistry: HL复习笔记8.2.3 Interpreting pH
Interpreting pH The pH scale is a numerical scale that shows how acidic or alkaline a solution is The values on the pH scale go from 0-14 (extremely acidic substances have values of below 0) All ac...
IB DP Chemistry: HL复习笔记8.2.2 pH & [H⁺]
pH & [H⁺] The acidity of an aqueous solution depends on the number of H+ (H3O+) ions in solution The pH is defined as: where [H+] is the concentration of H+ in mol dm–3 The pH scale is a logari...
