Edexcel A Level Chemistry:復習筆記1.2.3 Orbitals
Orbital Shapes Orbitals Subshells contain one or more?atomic orbitals Orbitals exist at?specific?energy levels and electrons can only be found at these specific levels,?not?in between them E...
Edexcel A Level Chemistry:復習筆記1.2.2 Quantum Shells
Developing Electronic Configuration Electrons move rapidly around the nucleus in energy shells If their energy is increased, then they can jump to a higher energy level The process is revers...
Edexcel A Level Chemistry:復習筆記1.2.1 Ionisation Energy
Factors Affecting Ionisation Energy Ionisation energy 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...
Edexcel A Level Chemistry:復習筆記1.1.4 Mass Spectrometry
Interpreting Mass Spectra Isotopes are different atoms of the same element that contain the same number of protons and electrons but a different number of neutrons These are atoms of the sam...
Edexcel A Level Chemistry:復習筆記1.1.3 Relative Mass
Isotopic & Atomic Mass The relative mass of an atom uses the carbon-12 isotope as the international standard One atom of carbon-12 has an accepted mass of 1.992646538 x 10-26?kg It is not reali...
Edexcel A Level Chemistry:復習筆記1.1.2 Isotopes
Atomic Structure Calculations An atom is?neutral?and has no overall charge Ions on the other hand are formed when atoms either?gain?or?lose?electrons, causing them to become?charged The numb...
Edexcel A Level Chemistry:復習筆記1.1.1 Structure of the Atom
Structure of the Atom All matter is composed of?atoms, which are the smallest parts of an element that can take place in?chemical reactions Atoms are mostly made up of?empty?space?around a v...
美國大學學費猛漲，排名前30的有哪些？
美國大學的學費貴，我想這是很多中國家庭的共同感受。而且它每年還都以一定的幅度在上漲著。 *US News統計的近二十年美本學費上漲趨勢 受到新冠疫情的影響，全球經濟開始下行，這也讓全球高校都陷入困頓之中，美...
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目前，中國地區包括外籍人員子女學校和公立學校國際部（班）、民辦國際學校在內的國際學校主要提供幾大主流課程。其中包括：A-Level、IB、AP，以及中美、中加和其他國家的國際課程。 而據一項針對國際學校開設相...
2023年USAD學術十項全能研習社報名啟動！
2023年USAD學術十項全能研習社報名啟動！如果你還不了解USAD學術十項全能研習社，那么別著急，本文帶你詳細了解，過后即可報名！ 什么是USAD？ USAD學術十項全能研習社，是通往世界名校的主題式通識學術研習活動...
CIE A Level Maths: Pure 3復習筆記8.3.3 Square Roots of a Complex Number - Advanced
Square Roots of a Complex Number - Advanced Previously we looked at how to find the square roots of a complex number in Cartesian form (a+bi). We can also find square roots using polar ?and ...
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