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Ellesmere OCR A level Chemistry
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Chemical Bonding
Atomic Structure Videos
Mole Calculations
Redox Reactions
Rate and Equilibrium
Enthalpy
Organic Chemistry
Module 2: Foundations in Chemistry
2.1 Atoms and Reactions
2.1.1 Atomic Structure and Isotopes
2.1.1 (a) Isotopes
2.1.1 (b) Sub-atomic particles & Mass/Atomic Numbers
2.1.1 (c) Relative Isotopic and Atomic Masses
2.1.1 (d) Mass Spectrometry and Relative Isotopic/Atomic Masses
2.1.1 (e) Relative Molecular Mass
2.1.2 Compounds, Formulae and Equations
2.1.2 (a) Writing formulae of Ionic compounds
2.1.2 (b) Construction of balanced chemical equatrions
2.1.3 Amount of Substance
2.1.3 (a) - The Mole
2.1.3 (e) Mole Calculations
2.1.3 (g) Ideal Gas Equation
2.1.3 (h) Percentage yields and atom economy
2.1.3 b,c,d Determination of Formula
2.1.4 Acids
2.1.4 (c) Neutralisation Reactions
2.1.4 (d) Making Standard Solutions & Carrying out Acid-Base Titrations
2.1.4 Acids (a) & (b) formulae of common acids & strength of acids
2.1.5 Redox
2.1.5 (a) Oxidation Numbers
2.1.5 (b) & (c) Writing formulae using Oxidation Numbers
2.1.5 (d) What is Redox?
2.1.5 (e) Metal-Acid Redox
2.2 Electrons, Bonding and Structure
2.2.1 Electronic Structure
2.2.1 (a,b,c) Orbitals, Shells and Sub-Shells
2.2.1 (d) Deducing Electronic configurations of atoms and ions
2.2.2 Bonding and structure
2.2.2 (d,e,f) Covalent Bonding
2.2.2 (g,h) Shapes of Molecules and Ions
2.2.2 (i,j) Electronegativity and Bond Polarity
2.2.2 (k,l) Types of Intermolecular Forces
2.2.2 (m) Anomalous Properties of Water
2.2.2 (n,o) Simple Molecular Lattices
2.2.2 Ionic Bonding
2.2.2 (a) Ionic Bonding and Dot-Cross Diagrams
2.2.2 (b) Ionic Lattice Structure
2.2.2 (c) Physical Properties of Ionic Substances
Module 3 : Periodic Table & Energy
3.1 The Periodic Table
3.1.1 Periodicity
3.1.1 (a,b) The Structure of the Periodic Table
3.1.1 (c) First Ionisation Energy
3.1.1 (d) Metallic Lattices
3.1.1 (e) Giant Covalent Lattices
3.1.1 (g) Melting Points across Periods 2 and 3
3.1.2 Group 2
3.1.2 (a) Electron Configurations and Redox
3.1.2 (b,c) Relative Reactivities of Group 2 elements
3.1.2 (d, e) Reaction of Group 2 Oxides with Water and Group 2 compounds as Bases
3.1.3 The Halogens
3.1.3 (a) Halogens' melting and boiling points
3.1.3 (b,c,d) Redox reactions and reactivity of Halogens and their compounds
3.1.3 (e, f) Disproportionation of Chlorine and Water Treatment
3.1.3 (g) Characteristic reactions of Halide ions
3.1.4 Qualitative Analysis
3.2 Physical Chemistry
3.2.1 Enthalpy Changes
3.2.1 (a,b,c) Enthalpy Changes
3.2.1 (d) Enthalpy change definitions
3.2.1 (e) Q=mcΔT
3.2.1 (f) Bond Enthalpies
3.2.1 (g) Hess' Law & Enthalpy Cycles
3.2.2 Reaction Rates
3.2.2 (a) Collision Frequency and Rate of Reaction
3.2.2 (b) Gradient and Rate
3.2.2 (c,d) Catalysts and Rate
3.2.2 (e) Measuring a Rate of Reaction
3.2.2 (f,g) The Boltzmann Distribution
3.2.3 Chemical Equilibrium
3.2.3 (a,b,c) Dynamic equilibrium and le Chatelier’s principle
3.2.3 (f,g) The Equilibrium Constant, Kc
Module 4: Core Organic Chemistry
4.1 Basic concepts and Hydrocarbons
4.1.1 Basic Concepts in Organic Chemistry
(f,g,h,i) Reaction mechanisms
4.1.1 (a) Organic Nomenclature
4.1.1 (b) Types of Organic Formulae
4.1.1 (c) Organic Vocabulary
4.1.1 (e) Structural Isomers
4.1.2 Alkanes
4.1.2 (a,b,c) Properties of Alkanes
4.1.2 (d,e,f,g) Reactions of Alkanes
4.1.3 Alkenes
4.1.3 (a,b) Properties of Alkenes
4.1.3 (c,d) Stereoisomerism in Alkenes
4.1.3 (e,f,g,h,i) Addition reactions of Alkenes
4.1.3 (j,k,l) Polymers from Alkenes, polymer waste and alternatives
4.2 Alcohols, Haloalkanes and Analysis
4.2.1 Alcohols
4.2.1 (a) Physical Properties of Alcohols
4.2.1 (b,c) Combustion and Oxidation of Alcohols
4.2.1 (d,e) Elimination and Substitution reactions of Alcohols
4.2.2 Haloalkanes
4.2.2 (a,b,c) Nucleophilic substitution of Primary Haloalkanes
4.2.2 (d) Trend in the rates of Hydrolysis of Primary Haloalkanes
4.2.2 (e) (e) Environmental concerns from use of Organohalogen compounds
4.2.3 Organic Synthesis
4.2.3 (a) Practical Skills
4.2.3 (b,c) Synthetic Routes
4.2.4 Analytical Techniques
4.2.4 (a,b,c,d,e) Infrared Spectroscopy
4.2.4 (f,g) Mass Spectrometry
Module 5: Physical Chemistry & Transition Elements
5.1 Rates, Equilibrium and pH
5.1.1 How fast?
5.1.1 (a,b) Orders, rate equations and rate constants
5.1.1 (c) Using the rate equation
5.1.1 (d,e,f,g) Rate graphs and orders
5.1.1 (h) Techniques to investigate reaction rates
5.1.1 (i) Rate-determining step
5.1.1 (j,k) Effect of temperature on rate constants
5.1.2 How far?
5.1.2 (a) Use of the terms Mole Fraction and Partial Pressure
5.1.2 (d) Expressions for Kc & Kp for homo- & hetero-geneous equilibria
5.1.2 (e) Calculations of Kc & Kp and determination of units.
5.1.2 (f,g) How Rate Constants change with changing conditions.
5.1.3 Acids, bases and buffers
5.1.3 (a,b) Brønsted–Lowry acids and bases
5.1.3 (c) Acid Dissociation Constants
5.1.3 (d,e) pH & [H+]
5.1.3 (e,f) The Ionic Product of Water, Kw
5.2 Lattice Enthalpy
5.2.1 Lattice Enthalpy
5.2.1 (a,b) Lattice enthalpy, Born–Haber and related enthalpy cycles
5.2.1 (c,d,e,) Enthalpies of Hydration & solution, and related enthalpy cycles
5.2.2 Enthalpy and Entropy
5.2.2 (a,b,c) Etropy
5.2.2 (d,e,f) Free Energy
5.2.3 Redox and Electrode Potentials
5.2.3 (a,b,c) Redox
5.2.3 (d,e) Redox Titrations
5.2.3 (f- i) Electrode Potentials
5.2.3 (j - k) Storage and Fuel-cells
5.3 Transition Elements
5.3.1 (a,b) What Are Transition Elements?
5.3.1 (c) Properties of Transition Elements
5.3.1 (f,g) Stereoisomerisim in Complex ions
5.3.1 (h,i) Ligand Substitution and Haemoglobin
5.3.1 (j) Precipitation reactions
5.3.1 (k,l) Redox Reactions
5.3.1 d & e Ligands and Complex Ions
5.3.2 Tests for ions
Module 6: Organic Chemistry & Analysis
6.1 Aromatic Compounds, Carbonyls and Acids
6.1.1 (a,b,c) Benzene and aromatic compounds
6.1.1 (a) What is Benzene?
6.1.1 (c) Naming Aromatic Compunds
6.1.1 (d,e,f,g) Electrophilic substitution
6.1.1 (h,i,j,k,l) Phenols
6.1.1 (h) The acidity of Phenols
6.1.1 (i,j) Electrophilic Substitution of Phenols.
6.1.1 (k,l) Directing Effect
6.1.2 (a,b,c) Reactions of Carbonyl compounds
6.1.2 (d,e) Characteristic tests for Carbonyl compounds
6.1.3 (a,b) Properties of Carboxylic Acids
6.1.3 (c,d,) Esters
6.1.3 (e,f) Acyl Chlorides
6.2 Nitrogen Compounds, Polymers and Synthesis
6.2.1 (a) Basicity of Amines
6.2.1 (b) Preparation of Amines
6.2.2 (a) Reactions of Amino Acids
6.2.2 (b) Amides
6.2.2 (c,d) Chirality
6.2.3 (a) Forming Polyester and Polyamides
6.2.3 (b) Hydrolysis of Polyester and Polyamides
6.2.3 (c) Distinguishing between Condensation polymers and Addition polymers
6.2.4 (a,b)Extending Carbon chain length
6.2.4 (c) Reducing Nitriles
6.2.4 (d) Alkylation and Acylation of Aromatic compounds
6.2.5 (a) Practical skills
6.2.5 (b,c) Organic Synthesis
6.3 Analysis
6.3.1 (a,b) Types of chromatography
6.3.1 (a) TLC interpretation
6.3.1 (b) GLC interpretation
6.3.1 (c) Tests for organic functional groups
6.3.2 (a) 13C NMR Spectroscopy
6.3.2 (b,c) 1H NMR Spectroscopy
6.3.2 (d) TMS and solvents
6.3.2 (e) Combined techniques
6.3.2 (e) Combined Techniques
6.2.5 (b,c) Organic Synthesis
Ellesmere OCR A level Chemistry
5.2 Lattice Enthalpy
Click below to access a subsection
5.2.1 Lattice Enthalpy
5.2.2 Enthalpy and Entropy
5.2.3 Redox and electrode potentials
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