AQA A Level Chemistry復(fù)習(xí)筆記1.2.6 Hydrated Salts
Water of Crystallisation Water of crystallisation?is when some compounds can form?crystals?which have?water?as part of their structure A compound that contains water of crystallisation is ca...
AQA A Level Chemistry復(fù)習(xí)筆記1.2.5 Atom Economy
Atom Economy The atom economy of a reaction shows how many of the atoms used in the reaction become the desired product The rest of the atoms or mass is wasted It is found directly fr...
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想了解一所學(xué)校的學(xué)術(shù)排名 一定不要錯(cuò)過(guò)URAP的 世界大學(xué)學(xué)術(shù)排名！ 這份最近出爐的名單里 華大學(xué)術(shù)能力碾壓清華？ 前十名的學(xué)校究竟有多牛？ 這篇文章告訴你~ 前言 隨著全球化推動(dòng)了研究與開(kāi)發(fā)各方面的快速變化，...
AQA A Level Chemistry復(fù)習(xí)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(fù)習(xí)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(guó)本科和研究生學(xué)費(fèi)最便宜的大學(xué)排名
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AQA A Level Chemistry復(fù)習(xí)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(fù)習(xí)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(fù)習(xí)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...
