2022年A-Level秋季重考指南！
夏季大考即將放榜。但是如果放榜后，對(duì)自己的成績(jī)不滿意，也不用就此擺爛，下半年的A-Level考試還可以選擇重考，通過參加秋季考試來刷新成績(jī)。 那么，重考對(duì)于申請(qǐng)是否有影響？重考有什么規(guī)則？接下來，帶大家來...
IB DP Chemistry: HL復(fù)習(xí)筆記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美本申請(qǐng)系統(tǒng)要求更新！支持CA系統(tǒng)申請(qǐng)的大學(xué)進(jìn)一步增加！
近期，多所大學(xué)錄取更新申請(qǐng)信息，不少大學(xué)更新了2022-2023的申請(qǐng)系統(tǒng)要求，支持Common App系統(tǒng)。今天小編就跟大家分享一下幾所重要大學(xué)的申請(qǐng)系統(tǒng)更新。 1、華大西雅圖改用Common App 2、德州奧斯汀啟用Common A...
英國(guó)G5申請(qǐng)如何準(zhǔn)備規(guī)劃？附G5院校學(xué)術(shù)成績(jī)要求
如果將英國(guó)大學(xué)的申請(qǐng)難度進(jìn)行劃分，G5院校毫無疑問穩(wěn)居金字塔頂端。 由于申請(qǐng)人數(shù)眾多，G5不僅整體錄取率低迷，熱門專業(yè)的申請(qǐng)更是難上加難。 G5申請(qǐng)準(zhǔn)備趕早不趕晚，很多目標(biāo)G5的學(xué)霸從IG階段就開始進(jìn)行有針對(duì)...
IB DP Chemistry: HL復(fù)習(xí)筆記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復(fù)習(xí)筆記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...
英國(guó)G5最受歡迎的熱門專業(yè)是哪些？競(jìng)爭(zhēng)究竟有多激烈？
如果將英國(guó)大學(xué)的申請(qǐng)難度進(jìn)行劃分，G5院校毫無疑問穩(wěn)居金字塔頂端。 由于申請(qǐng)人數(shù)眾多，G5不僅整體錄取率低迷，熱門專業(yè)的申請(qǐng)更是難上加難。 那么，G5本科那些申請(qǐng)人數(shù)最多的專業(yè)，競(jìng)爭(zhēng)究竟有多激烈？我們?yōu)槟?..
IB DP Chemistry: HL復(fù)習(xí)筆記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復(fù)習(xí)筆記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復(fù)習(xí)筆記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復(fù)習(xí)筆記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復(fù)習(xí)筆記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...
