Edexcel A Level Chemistry:复习笔记1.6.2 Balanced Equations
Writing Balanced Equations A?symbol?equation is a shorthand way of describing a chemical reaction using?chemical symbols?to show the number and type of each atom in the reactants and product...
Edexcel A Level Chemistry:复习笔记1.6.1 Empirical & Molecular Formulae
Empirical & Molecular Formula Definitions 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 C2...
Edexcel A Level Chemistry:复习笔记1.5.8 Predicting Structures
Predicting Structure & Bonding Different types of?structure?and?bonding?have different effects on the?physical properties?of substances such as their?melting?and?boiling points,?electric...
Edexcel A Level Chemistry:复习笔记1.5.7 Covalent Structures
Simple Molecular Compounds Simple Molecular Compounds Covalent substances tend to have small molecular structures, such as Cl2, H2O or CO2 These small molecules are known as?simple molecules...
Edexcel A Level Chemistry:复习笔记1.5.6 Giant Lattices
Giant Lattices Ionic Lattices The ions form a?lattice?structure?which is an evenly distributed?crystalline?structure Ions in a lattice are arranged in a?regular?repeating?pattern?so that pos...
Edexcel A Level Chemistry:复习笔记1.5.5 Metallic Bonding
Metallic Bonding 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 throughout...
Edexcel A Level Chemistry:复习笔记1.5.4 Intermolecular Forces & Physical Properties
Intermolecular Forces & Physical Properties Branching The larger the surface area of a molecule, the more contact it will have with adjacent molecules The surface area of a molecule is?r...
Edexcel A Level Chemistry:复习笔记1.5.3 Hydrogen Bonding
Hydrogen Bonding Interactions Examples of compounds that can form hydrogen bonds are: Alcohols (contains an O-H bond) Ammonia (contains an N-H bond) Amines (contains an N-H bond) Carboxylic ...
Edexcel A Level Chemistry:复习笔记1.5.2 Intermolecular Forces
Intermolecular Forces Intramolecular forces Intramolecular forces?are forces?within?a molecule and are usually covalent bonds Covalent bonds?are formed when the outer electrons of two atoms ...
