8月A-Level大考成绩放榜，成绩公布时间和查分攻略请收好！
此前由于疫情原因，各个国际大考相继出现考试形式的更改问题，其中个别地区的A-Level大考就因此转换为POE或TAG形式，许多同学不免担忧评估出分会导致高分通胀情况。 同学们的担忧是否会成为既定事实？相信随着今...
CIE A Level Chemistry复习笔记1.3.15 Inter & Intramolecular Forces
Comparing Bonds to Intermolecular Forces Intramolecular forces Intramolecular forces?are forces?within?a molecule Ionic bonding?is the?electrostatic attraction?between?positive?(cations) and?negati...
CIE A Level Chemistry复习笔记1.3.14 Van der Waals' Forces
van der Waals' Forces & Dipoles Covalent bonds are strong?intramolecular forces Molecules also contain weaker?intermolecular forces?which are forces?between?molecules These intermolecular force...
CIE A Level Chemistry复习笔记1.3.13 Polarity & Dipole Moments
Polarity & Dipole Moments Electronegativity?is the ability of an atom to draw a pair of electrons towards itself in a covalent bond Electronegativity?increases?across a Period and?decreases?goi...
CIE A Level Chemistry复习笔记1.3.12 Hydrogen Bonding
Hydrogen Bonding Hydrogen bonding Hydrogen bonding?is the?strongest?form of?intermolecular bonding Intermolecular bonds are bonds?between?molecules Hydrogen bonding is a type of?permanent dipole – ...
CIE A Level Chemistry复习笔记1.3.10 Bond Energy & Length
Covalent Bonding: Bond Energy & Length Bond energy The?bond energy?is the energy required to?break?one mole of a particular covalent bond in the gaseous states Bond energy has units of kJ mol-1...
CIE A Level Chemistry复习笔记1.3.9 Hybridisation
Covalent Bonding: Orbitals & Hybridisation Bond overlap in covalent bonds A single?covalent?bond?is formed when two nonmetals combine Each atom that combines has an?atomic?orbital?containing a ...
CIE A Level Chemistry复习笔记1.3.8 Coordinate Bonding
Dative Bonding: Definition & Examples In?simple?covalent?bonds?the two atoms involved shares electrons Some molecules have a?lone?pair of electrons that can be donated to form a bond with an?el...
CIE A Level Chemistry复习笔记1.3.7 Covalent Bonding
Covalent Bonding: Definition & Examples Covalent?bonding occurs between two?nonmetals A covalent bond involves the?electrostatic?attraction?between nuclei of two atoms and the bonding electrons...
