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...
AQA A Level Chemistry復習筆記1.8.5 Changes Which Affect the Equilibrium
Changes Affecting the Equilibrium Constant Changes in concentration If all other conditions stay the same, the equilibrium constant?Kc?is?not affected?by any changes in concentration of the ...
AQA A Level Chemistry復習筆記1.8.4 Calculations Involving the Equilibrium Constant
Kc Calculations Calculations involving?Kc In the equilibrium expression each figure within a square bracket represents the concentration in?mol dm-3 The?units?of?Kc?therefore depend on the f...
AQA A Level Chemistry復習筆記1.8.3 The Equilibrium Constant, Kc
The Equilibrium Constant, Kc Equilibrium expression & constant The?equilibrium expression?links the?equilibrium constant,?Kc, to the?concentrations of reactants and products?at equilibri...
