Edexcel A Level Chemistry:复习笔记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:复习笔记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:复习笔记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:复习笔记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...
CIE A Level Maths: Pure 3复习笔记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 ...
A-level课程学三门够吗？
关注英国留学的家长们都知道，英国中学的课程，无论是GCSE还是A-Level，都是选课制。A-level课程学三门够吗？ 拿离大学更近的A-Level来说，A-Level课程共有70多门科目供学生选择，但最终用来申请大学的只有学生选...
CIE A Level Maths: Pure 3复习笔记8.3.2 Geometry of Complex Multiplication & Division
Geometry of Complex Multiplication & Division You now know how conjugation, addition and subtraction affect the geometry of complex numbers on an Argand diagram. Now we can look at the e...
CIE A Level Maths: Pure 3复习笔记8.3.1 Exponential Form of Complex Numbers
Exponential Form of Complex Numbers You now know how to do lots of operations with complex numbers: add, subtract, multiply, divide, raise to a power and even square root. The last operation...
A-level学生留学申请时间规划！
A-Level作为国内三大主流国际课程之一，在每年八月份出分。近年来，越来越多中国学生选择A-level国际课程，现在，我们一起来看看A-level学生留学申请时间规划，如何为大学申请做好准备。 注：各地大学和不同专业...
