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...
CIE A Level Chemistry复习笔记1.3.6 Metallic Bonding
Metallic Bonding: Definition Metal atoms are tightly packed together in lattice structures When the metal atoms are in lattice structures, the electrons in their outer shells are free to move throu...
CIE A Level Chemistry复习笔记1.3.5 Ionic Bonding Examples
Ionic Bonding: Examples Sodium chloride Sodium is a Group 1 metal It loses its outer electron to form a sodium ion with a +1 charge (Na+) Chlorine is a Group 7 non-metal It gains 1 electron to form...
CIE A Level Chemistry复习笔记1.3.4 Ionic Bonding
Ionic Bonding: Definition As a general rule, metals are on the left of the Periodic Table and nonmetals are on the right-hand side Ionic bonding involves the transfer of electrons from a metallic e...
CIE A Level Chemistry复习笔记1.3.3 Electronegativity & Bonding
Electronegativity: Predicting Bond Formation The differences in Pauling electronegativity values can be used to predict whether a bond is covalent or ionic in character Electronegativity & cova...
CIE A Level Chemistry复习笔记1.3.2 Electronegativity Trends
Electronegativity: Trends Electronegativity varies across Periods and down the Groups of the Periodic Table Down a group There is a decrease in electronegativity going down the Group The nuclear ch...
CIE A Level Chemistry复习笔记1.3.1 Electronegativity
Electronegativity: Definition Electronegativity is the ability of an atom to attract a pair of electrons towards itself in a covalent bond This phenomenon arises from the positive nucleus’s ability...
CIE A Level Chemistry复习笔记1.2.7 Reacting Masses & Volumes
Mole Calculations The number of moles of a substance can be found by using the following equation: It is important to be clear about the type of particle you are referring to when dealing with mole...
