斯坦福及藤校新生成績分布！美國TOP大學偏好錄取什么成績的學生？
美國大學入學人數跌破記錄了！ 明明申請競爭那么激烈， 到底是什么情況？ 據美國國家學生信息中心（National Student Clearinghouse Research Center）最新數據顯示：2022年春季本科入學人數相較去年減少了66.2萬...
AQA A Level Chemistry復習筆記2.3.2 Chemical Properties of Group 7
Halogens: Oxidising Agents Halogens react with metals by accepting an electron from the metal atom to become an ion with 1- charge Eg.? ?Ca (s) + Cl2?(g) → CaCl2?(s)??consisting of?Ca2+?and?...
2022馬歇爾經濟學會寫作比賽題目已公布，新賽季報名開啟！
馬歇爾學會是劍橋大學的經濟學會，馬歇爾經濟學會寫作比賽（Marshall Society Essay Competition）是面向A-level、IB和其他體系學生打造的寫作比賽，要求學生利用現實世界的相關論據對經濟理論進行充分解釋和合理...
AQA A Level Chemistry復習筆記2.2.4 Uses of Group 2 Elements
Uses of Group 2 Three different calcium compounds are used commonly in agriculture, construction and iron extraction: Limestone?- this is impure calcium carbonate Quicklime?- this is calcium...
AQA A Level Chemistry復習筆記2.2.3 Reactions of Group 2
Reactions of Group 2 The group 2 elements react with oxygen, water and dilute acids Group 2 Reactions - Observations Reactions with water and oxygen The reaction of group 2 metals wit...
AQA A Level Chemistry復習筆記2.2.2 Solubility of Group 2 Compounds: Hydroxides & Sulfates
Solubility of Hydroxides & Sulfates Group 2 hydroxides Going down the group, the solutions formed from the reaction of group 2 oxides with water become more?alkaline When the oxides are ...
CollegeBoard發布SAT機考樣題，正式回應黃牛考位問題
今天，CollegeBoard正式放出了SAT機考樣題，并采取直播方式對機考模式進行講解，同時，首次正面回應了黃牛考位問題，小編一起來和大家分享下。 在今年1月份，CB宣布SAT進入機考時代，國際考場在2023年春季率先使...
AQA A Level Chemistry復習筆記2.1.4 Trends of Period 3 Elements: Melting Point
Trend: Melting Point Melting points of the elements across period 3 A pattern is a little harder to see from the data, but you can see that it rises and falls: Melting points of the period 3...
AQA A Level Chemistry復習筆記2.1.3 Trends of Period 3 Elements: First Ionisation Energy
Trend: First Ionisation Energy The?first ionisation energy (IE1)?is the energy required to?remove?one mole of electrons from one mole of atoms of an element in the?gaseous state?to form one ...
AQA A Level Chemistry復習筆記2.1.2 Trends of Period 3 Elements: Atomic Radius
Trend: Atomic Radius Elements in the periodic table are arranged in order of increasing atomic number and placed in vertical columns (groups) and horizontal rows (periods) The elements acros...
AQA A Level Chemistry復習筆記1.9.3 Redox Equations
Balancing Redox Reactions Balancing equations using redox principles is a useful skill and is best illustrated by following an example It is important to follow a methodical step-by-step app...
AQA A Level Chemistry復習筆記1.9.2 Oxidation States: The Rules
Oxidation States Oxidation State Rules A few simple rules help guide you through the process of determining the oxidation state of any element Remember, you are determining the oxidation sta...
