CIE A Level Chemistry复习笔记2.1.3 Period 3 Oxides
Period 3: Oxides Reactions with oxygen & chlorine Reaction of Period 3 elements with oxygen table Reaction of Period 3 elements with chlorine table Reaction of sodium & magnesium with water...
CIE A Level Chemistry复习笔记2.1.2 Period 3 Elements: Structure & Bonding
Period 3: Structure & Bonding Melting point Melting points of the elements across Period 3 table Ions of Period 3 elements with increasing positive charge (metals) and increasing of outer elect...
CIE A Level Chemistry复习笔记2.1.1 Period 3 Elements: Physical Properties
Properties of the Elements in Period 3 Elements in the periodic table are arranged in order of increasing atomic number and placed in vertical columns (groups) and horizontal rows (periods) The ele...
CIE A Level Chemistry复习笔记1.8.4 Homogeneous & Heterogeneous Catalysts
Catalysts Catalysis is the process in which the rate of a chemical reaction is increased, by adding a substance called a catalyst A catalyst increases the rate of a reaction by providing the reacta...
CIE A Level Chemistry复习笔记1.8.3 Activation Energy & Boltzmann Distribution Curves
Activation Energy For a reaction to take place, the reactant particles need to overcome a minimum amount of energy This energy is called the activation energy (Ea) In exothermic reactions the react...
CIE A Level Chemistry复习笔记1.8.2 Rate of Reaction
Rate of Reaction: Concentration & Pressure Concentration The more concentrated a solution is, the greater the number of particles in a given volume of solvent An increase in concentration cause...
CIE A Level Chemistry复习笔记1.8.1 Collision Theory
Rate of Reaction: Collision Theory Reaction rate The rate of a reaction is the speed at which a chemical reaction takes place and has units mol dm-3 s-1 The rate of a reaction can be calculated by:...
CIE A Level Chemistry复习笔记1.7.13 Indicators used in Titration
Indicators Indicators are substances that change colour when they are added to acidic or alkaline solutions When choosing the appropriate indicator, the pH of the equivalence point is very importan...
CIE A Level Chemistry复习笔记1.7.12 pH Titration Curves
pH Titration Curves What are pH titration curves Titration is a technique used in neutralisation reactions between acids and alkalis to determine the concentration of the unknown solution It involv...
