Resources
Resources by Nouman Ahmed
188 published. Showing 145 to 188.
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Study guides
Condensation Polymerisation and Polymer Degradability
Forming polyesters and polyamides, deducing repeat units and monomers, predicting polymerisation type, and why some polymers biodegrade and others don't, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · A Level
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Electrochemistry: Electrolysis and Standard Electrode Potentials
Quantitative electrolysis, standard electrode and cell potentials, predicting feasibility, and the Nernst equation, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · A Level
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Group 2: Thermal Stability and Solubility Trends
Explaining the thermal stability of Group 2 nitrates and carbonates, and the solubility trends of their hydroxides and sulfates, using lattice energy and hydration enthalpy, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · A Level
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NMR Spectroscopy: Carbon-13 and Proton NMR
Interpreting carbon-13 and proton NMR spectra to deduce molecular structure, chemical shifts, peak areas, splitting patterns and the n+1 rule, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · A Level
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Optical Isomerism and Chirality
Enantiomers, chirality, racemic mixtures, plane-polarised light, and why chirality matters for drug synthesis, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · A Level
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A Level Organic Chemistry: Naming, Mechanisms and Aromatic Shape
New A Level functional groups and naming, electrophilic substitution and addition-elimination terminology, and the shape of benzene, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · A Level
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A Level Organic Synthesis: Multi-Step Routes with Aromatic Chemistry
Devising and analysing multi-step organic synthesis routes that combine aliphatic, aromatic and nitrogen chemistry, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · A Level
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Phenol: Reactions and Acidity
How phenol is produced, its reactions with bases and electrophiles, and why phenol, water and ethanol differ in acidity, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · A Level
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Reaction Kinetics: Rate Equations and Catalysis
Rate equations, orders of reaction, rate constants, reaction mechanisms, and homogeneous and heterogeneous catalysis, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · A Level
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Transition Elements: Colour, Stereoisomerism and Stability Constants
Why transition-metal complexes are coloured, cis/trans and optical isomerism in complexes, and stability constants, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · A Level
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Transition Elements: Properties, Complexes and Redox Chemistry
Why transition elements have variable oxidation states, act as catalysts and form complex ions, ligands, coordination number, and transition-metal redox titrations, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · A Level
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Acids and Bases: The Brønsted-Lowry Theory
The Brønsted-Lowry theory, strong vs weak acids and bases, neutralisation, and reading titration curves and indicator choice, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · AS Level
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Addition Polymerisation
Deducing polymer repeat units and monomers, and the disposal problems addition polymers cause, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · AS Level
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Alcohols: Reactions and Oxidation
Production, oxidation and distinguishing tests for primary, secondary and tertiary alcohols, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · AS Level
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Analytical Techniques: Infrared Spectroscopy and Mass Spectrometry
Reading an infrared spectrum for functional groups, and interpreting a mass spectrum for relative atomic mass, molecular mass, fragmentation and halogen content, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · AS Level
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Atomic Structure: Orbitals and Ionisation Energy
Electronic configuration by orbital, and how ionisation energy trends and data are explained and interpreted, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · AS Level
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Atomic Structure: Particles, Radius and Isotopes
Subatomic particles, deflection in an electric field, atomic and ionic radius trends, and isotopes, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · AS Level
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Atoms, Molecules and Stoichiometry at AS
Ionic formulae from Roman-numeral oxidation numbers, ionic equations, and stoichiometric calculations including limiting reagent and percentage yield, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · AS Level
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Carbonyl Compounds: Aldehydes and Ketones
Producing and reducing aldehydes and ketones, the nucleophilic addition mechanism with HCN, and the tests that identify and distinguish them, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · AS Level
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Carboxylic Acids and Esters
Producing and reacting carboxylic acids, esterification, and the difference between acid and alkaline ester hydrolysis, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · AS Level
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Chemical Bonding: Electronegativity, Ionic and Metallic Bonds
Electronegativity trends, the electrostatic models of ionic and metallic bonding, and using electronegativity to predict bond type, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · AS Level
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Chemical Bonding: Shapes and Intermolecular Forces
Covalent and coordinate bonding, expanded octets, orbital overlap, bond energy and length, VSEPR shapes and bond angles, hydrogen bonding and van der Waals' forces, and dot-and-cross diagrams including odd-electron species, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · AS Level
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Chemical Energetics: Hess's Law and Enthalpy Cycles
Standard enthalpy changes, bond-energy calculations, and using Hess's law to construct enthalpy cycles, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · AS Level
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Chemical Equilibria: Kc, Kp and Le Chatelier's Principle
Dynamic equilibrium, Le Chatelier's principle, and the Kc and Kp equilibrium-constant expressions, including the Haber and Contact processes, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · AS Level
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Group 17: The Halogens
Physical and chemical trends down Group 17, halide-ion reducing power, the silver nitrate and concentrated sulfuric acid tests, and chlorine's disproportionation reactions, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · AS Level
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Group 2: The Alkaline Earth Metals
Reactions of the Group 2 metals and their oxides, hydroxides, carbonates and nitrates, and the solubility and thermal-stability trends down the group, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · AS Level
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Halogenoalkanes: Nucleophilic Substitution and Elimination
SN1 and SN2 nucleophilic substitution, elimination, and the reactivity trend across halogenoalkanes, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · AS Level
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Hydrocarbons: Alkanes and Alkenes
Free-radical substitution in alkanes and electrophilic addition in alkenes, with full mechanisms, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · AS Level
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Nitrogen and Sulfur: Reactivity and Atmospheric Chemistry
Why nitrogen is so unreactive, the basicity of ammonia, and the role of nitrogen oxides in photochemical smog and acid rain, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · AS Level
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Nitrogen Compounds: Amines and Nitriles
Producing primary amines, nitriles and hydroxynitriles, and how they connect to the halogenoalkane and carbonyl chemistry already covered, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · AS Level
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Organic Synthesis: Planning Multi-Step Routes
Identifying functional groups, planning multi-step synthetic routes, and analysing given routes, using every AS organic reaction together, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · AS Level
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The Periodic Table: Periodicity Across Period 3
Physical and chemical periodicity across Period 3 (Na to Ar), including oxide and chloride reactions with water, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · AS Level
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Reaction Kinetics: Collision Theory and Catalysis
Collision theory, activation energy, the Boltzmann distribution, and how catalysts work, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · AS Level
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Redox Processes: Oxidation Numbers and Electron Transfer
Calculating and using oxidation numbers, balancing equations by oxidation-number change, and disproportionation, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · AS Level
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States of Matter: Ideal Gases and Structure
The ideal gas equation pV = nRT, and the four types of giant/molecular lattice structure and how they determine physical properties, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · AS Level
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Formulae, Equations and the Mole
Formulae, balanced equations, relative masses and mole calculations for Cambridge IGCSE 0620 and O Level 5070 — where the two qualifications differ most.
Cambridge · IGCSE, O Level
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Identification of Ions and Gases
The reagents, observations and conclusions for identifying anions, cations, gases and flame colours, for Cambridge IGCSE 0620 and O Level 5070.
Cambridge · IGCSE, O Level
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Ionic, Covalent and Metallic Bonding
Ionic, covalent, giant covalent and metallic bonding for Cambridge IGCSE 0620 and O Level 5070, with structure explaining properties throughout.
Cambridge · IGCSE, O Level
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Organic Mechanisms: An Introduction
The naming conventions, mechanism vocabulary and isomerism you need before studying any specific organic reaction, for Cambridge International AS & A Level Chemistry 9701.
Cambridge · AS Level
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The Periodic Table: Groups and Trends
How the Periodic Table is arranged, and the trends in Group I, Group VII, the transition elements and the noble gases, for Cambridge IGCSE 0620 and O Level 5070.
Cambridge · IGCSE, O Level
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Rates of Reaction and Reversible Reactions
Collision theory, the factors that change reaction rate, reversible reactions, equilibrium, and the Haber and Contact processes, for Cambridge IGCSE 0620 and O Level 5070.
Cambridge · IGCSE, O Level
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Redox Reactions
Oxidation and reduction by oxygen transfer, electron transfer and oxidation number, for Cambridge IGCSE 0620 and O Level 5070.
Cambridge · IGCSE, O Level
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States of Matter and Kinetic Particle Theory
Particle arrangement, changes of state and diffusion for Cambridge IGCSE 0620 and O Level 5070, with IGCSE Core and Extended outcomes clearly labelled.
Cambridge · IGCSE, O Level
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Revision notes
Atomic Structure
Protons, neutrons and electrons, atomic and mass number, electronic configuration by shell, and isotopes, for Cambridge IGCSE 0620 and O Level 5070.
Cambridge · IGCSE, O Level
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