2022 年馬歇爾經濟論文競賽題目分析
2022 年馬歇爾經濟論文學術活動題目分析，同學們也可以感受一下這項比賽的難度，評估一下你是不是對參賽有興趣。??2022年馬歇爾經濟論文寫作學術活動主題已經公布了，根據主題的簡要說明，擬好自己的題目，或使用...
CIE A Level Chemistry復習筆記1.7.1 Chemical Equilibria
Reversible Reactions & Dynamic Equilibrium Reversible reaction Some reactions go to completion where the reactants are used up to form the products and the reaction stops when all of the reacta...
CIE A Level Chemistry復習筆記1.6.3 Oxidising & Reducing Agents
Oxidising & Reducing Agents Oxidising agent An oxidising agent?is a substance that?oxidises?another atom or ion by causing it to lose electrons An oxidising agent itself gets?reduced – gains el...
CIE A Level Chemistry復習筆記1.6.2 Redox Reactions
Balancing Redox Reactions Oxidation numbers can be used to balance chemical equations Roman numerals between brackets are used to show the ox. no. of an atom that can have multiple oxidation states...
CIE A Level Chemistry復習筆記1.6.1 Oxidation Number Rules
Oxidation Numbers The oxidation numbers (also known as oxidation state) is a number given to each atom or ion in a compound to keep track of how many electrons they have In a single ion or molecula...
擁有強勢理工科的寶藏文理學院盤點！
美國高等教育系統主要包括三類學校：綜合性大學(University)、文理學院(Liberal Arts College)、社區學院(Community College)。近些年，隨著不斷地科普，越來越多的留學家庭，開始將“小而精”的文理學院納入選校清...
CIE A Level Chemistry復習筆記1.5.5 Hess’s Law
Hess Cycles Hess’s Law?states that:"The total enthalpy change in a chemical reaction is independent of the route by which the chemical reaction takes place as long as the initial and final conditio...
CIE A Level Chemistry復習筆記1.5.4 Enthalpy & Bond Energies
Enthalpy & Bond Energies During a reaction, enthalpy changes take place because bonds are being broken and formed Energy (in the form of heat) is needed to overcome attractive forces between at...
CIE A Level Chemistry復習筆記1.5.3 Standard Enthalpy Change
Enthalpy Changes at Standard Conditions To fairly compare the changes in enthalpy between reactions, all reactions should be carried out under standard conditions These standard conditions are: A?p...
CIE A Level Chemistry復習筆記1.5.2 Energy Level Diagrams
Energy Level Diagrams An energy level diagram is a diagram that shows the energies of the reactants, the transition state(s) and the products of the reaction with time The?transition state?is a sta...
CIE A Level Chemistry復習筆記1.5.1 Enthalpy Change, ΔH
Enthalpy Changes The total chemical energy inside a substance is called the enthalpy (or heat content) When chemical reactions take place, changes in chemical energy take place and therefore the en...
CIE A Level Chemistry復習筆記1.4.4 Bonding & Structure
Effects of Bonding & Structure on Physical Properties Different types of?structure?and?bonding?have different effects on the?physical properties?of substances such as their?melting?and?boiling ...
