CIE A Level Chemistry復習筆記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復習筆記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復習筆記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復習筆記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復習筆記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復習筆記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復習筆記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復習筆記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復習筆記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...
CIE A Level Chemistry復習筆記1.7.11 Strength of Acids & Bases
Strong & Weak Acids & Bases Strong and weak acids can be distinguished from each other by their: pH value?(using a pH meter or universal indicator) Electrical conductivity Reactivity pH An ...
CIE A Level Chemistry復習筆記1.7.10 pH Scale
The pH Scale The pH scale is a numerical scale that shows how?acidic?or?alkaline?a solution is The values on the pH scale go from 1-14 (extremely acidic substances have values of below 1) All acids...
CIE A Level Chemistry復習筆記1.7.9 Acid & Base Dissociation
Acid & Base Dissociation Strong acids A?strong acid?is an acid that?dissociates?almost?completely?in aqueous solutions HCl (hydrochloric acid), HNO3?(nitric acid) and H2SO4?(sulfuric acid) The ...
