AQA A Level Chemistry復習筆記1.2.4 Reaction Yields
Percentage Yield In a lot of reactions, not all reactants react to form products which can be due to several factors: Other reactions take place simultaneously The reaction does not go to?co...
AQA A Level Chemistry復習筆記1.2.3 Balanced Equations
Deducing Formulae of Compounds Ionic?compounds?are formed from a?metal?and a?non-metal?bonded together Ionic compounds are electrically neutral; the positive charges equal the negative charg...
2022美國本科和研究生學費最便宜的大學排名
付不起高昂的學費 但又不想放棄出國留學機會？ 別擔心—— 快來看看2022年美國本科&研究生 學費最低的大學吧 根據移民政策研究所的數據，在2019-2020學年之間，約有110萬名國際學生在美國的大學和小型文理學院...
AQA A Level Chemistry復習筆記1.2.2 Empirical & Molecular Formula
Empirical & Molecular Formulae The?molecular?formula?is the formula that shows the?number?and?type?of each atom in a molecule E.g. the molecular formula of ethanoic acid is C2H4O2 ...
AQA A Level Chemistry復習筆記1.1.7 Ionisation Energy: Trends & Evidence
Ionisation Energies: Equations The?second ionisation energy?(IE2) is the energy required to remove the second mole of electrons from each +1 ion in a mole of gaseous +1 ions, to form one mol...
AQA A Level Chemistry復習筆記1.1.6 Ionisation Energy
Ionisation Energies The?Ionisation?Energy?(IE) of an element is the amount of energy required to remove?one mole?of electrons from?one mole?of gaseous atoms of an element to form?one mole?of...
AQA A Level Chemistry復習筆記1.1.5 Electron Configuration
Deducing the Electron Configuration The Periodic Table is split up into four main blocks depending on their electron configuration Elements can be classified as an s-block element, p-block e...
AQA A Level Chemistry復習筆記1.1.4 Shells and Orbitals
Electron Shells Shells The arrangement of electrons in an atom is called the?electron?configuration Electrons are arranged around the nucleus in?principal energy levels?or?principal quantum ...
AP預備微積分與不同數學國際課程的對比及備考建議
在這篇文章中我們會注重分享AP Precal與 不同數學國際課程體系中相似科目的對比 以及備考建議 歡迎分享與收藏 AP Precal的內容和其他不同體系的對比 （1）和AP Calculus（AP 微積分）對比 AP預備微積分是AP微積分...
AQA A Level Chemistry復習筆記1.1.3 Time of Flight Mass Spectrometry
Time of Flight Mass Spectrometry Mass Spectrometry is a powerful analytical technique It is the most useful instrument for accurate determination of the relative atomic mass of an element, b...
AQA A Level Chemistry復習筆記1.1.2 Mass Number & Isotopes
Subatomic Structure of Atoms & Ions The mass of an atom is?concentrated?in the nucleus, because the nucleus contains the heaviest subatomic particles (the neutrons and protons) The mass ...
AP統計重要考點梳理
計算器的使用 統計考試全程可以使用計算器，并且在考試中提供公式表，但這里要提示同學們，切不可依賴公式表來解題。 原因在于一是公式表中的公式并不包括所有的公式，二是頻繁看公式表會降低解題速度。并且，如...
