OCR • Chemistry A

Lecture notes describing ways of drawing out molecules for OCR A chemistry. Includes examples for structural, displayed, skeletal, molecular and empirical formulae of organic molecules.

Lecture notes on structural isomerism for module 4 of the OCR A specification. Includes colour-coded drawings/diagrams of different types of isomerism.

A level Chemsitry OCR A lecture notes on alkanes, from module four of the specification. This includes colour coded explanations of how to name complex alkanes.

OCR A Chemistry Practical Methods and Justifications A complete guide to all OCR A-level Chemistry required practicals, covering both experimental detail and exam-focused reasoning. What’s included: Step-by-step methods for every required practical Full justifications for each stage, aligned with exam mark schemes Clear explanations of why techniques are used and how they ensure accuracy Links to common exam questions and how to answer them Concise structure for quick refere...

This summary sheet includes all the purification techniques and standard solution preparation which are commonly asked practical skills for OCR A A level Chemistry. The practicals included are: Preparing a standard solution, Recrystallisation, Solvent Extraction, Filtration under Reduced Pressure. These are commonly asked about in higher mark questions (3 marks and over). All key marking points are included as well as explanations in red about when each technique is used. A labelled diagram is a...

Colourful mind map summarising all OCR A A level Chemistry Mechanisms - includes all marking points for questions. Revision activity with answers included to practise active recall of the mechanisms.

Detailed summary and explanation of key marking points for questions on Group 2 & Group 7 for OCR A A level Chemistry. Includes explanation of trends, properties, reactions and uses.

Summary of Trends in Ionisation Energy for OCR A A level Chemistry. Explains trends across periods 2 & 3 and down groups 1 & 2. Clear explanations and marking points for questions with colour coded diagrams for easier memorisation.

The A-Level Chemistry Revision System That Took Me from a B to 90%+ in Every Exam In year one, I was stuck at B grades and couldn’t figure out how to improve. After creating this simple but powerful Revision System, my revision became focused and efficient. By the time I moved on to past papers, I was consistently dropping just one or two marks and achieving over 90% in every exam. My friends at college started using this system too – they found it just as helpful, and it boosted thei...

Get concise and easy-to-understand A-Level Chemistry notes on Kinetics, perfect for Edexcel, AQA, and OCR exam boards. This summary covers key concepts like collision theory, activation energy, factors affecting reaction rates, rate equations, and the Arrhenius equation — all explained simply with exam tips and diagrams. Ideal for quick revision and to boost your confidence before exams. Includes: Clear definitions and explanations Energy profile diagrams with labels Step-by-step g...

Document containing detailed notes for Module 5.1.2 How Far? Student received an A* grade at A Level so notes are of a high quality and can be used

Document containing detailed notes for Module 5.1.1 How Fast? Student received an A* grade at A Level so notes are of a high quality and can be used to achieve the highest marks. Conatins example questions and answers alongside all the theoretical knowledge and information.

Summary sheet describing the tests for ions, which are required for OCR A Level Chemistry A. The sheet includes reagents, common ionic equations and the observations of positive tests.

This document provides detailed A-Level/IB Chemistry notes on transition metals, focusing on their electronic configuration, complex ion formation, isomerism, and characteristic reactions. Key Topics Covered: Definition & Properties of Transition Metals: Criteria: Forms at least one ion with a partially filled d-orbital (excludes Sc³⁺ and Zn²⁺). Characteristics: Forms colored compounds (e.g., Cu²⁺ → blue, Fe³⁺ → orange-brown). Acts as catalysts (e.g., Fe in Haber ...

This document provides comprehensive A-Level/IB Chemistry notes on amines, amino acids, amides, and polymers, covering their formation, reactions, and structural properties. Key Topics Covered: Amines: Classification: Primary (1°), secondary (2°), tertiary (3°). Formation: Nucleophilic substitution of haloalkanes with ammonia. Reduction of nitriles (R-CN → R-CH₂NH₂) or nitro compounds (R-NO₂ → R-NH₂). Basicity: Acts as a proton acceptor (lone pair on N); forms s...

This document provides detailed A-Level/IB Chemistry notes on arenes (aromatic compounds), focusing on benzene’s structure, stability, and reactions, as well as the chemistry of phenols. Key Topics Covered: Benzene Structure & Stability: Kekulé’s Model vs. Reality: Benzene’s unexpected stability (resonance energy, -208 kJ/mol vs. expected -360 kJ/mol). Equal bond lengths (evidence against alternating double/single bonds). Delocalized π-system explains low reactivity (does...

This document provides comprehensive A-Level/IB Chemistry notes on analytical techniques, including spectroscopy and chromatography, essential for identifying and characterizing organic compounds. Key Topics Covered: Infrared (IR) Spectroscopy: Identifies functional groups by measuring absorption of IR radiation at characteristic frequencies. Mass Spectrometry: Molecular fragmentation patterns (e.g., M⁺ peak, base peak) to determine molecular mass and structure. Example: Ethano...

This document provides detailed A-Level/IB Chemistry notes on carbonyl compounds, including aldehydes, ketones, carboxylic acids, and esters, covering their properties, reactions, and key laboratory tests. Key Topics Covered: Carbonyl Compounds (Aldehydes & Ketones): Nucleophilic Addition Reactions (e.g., with HCN to form hydroxynitriles). Chemical Tests: 2,4-DNP Test – Forms a yellow/orange precipitate to confirm carbonyl presence. Tollens’ Reagent – Distinguishes aldehyde...

This document provides detailed A-Level/IB Chemistry notes on alcohols, haloalkanes, and related organic reactions, including: Properties of Alcohols: General formula (CₙH₂ₙ₊₁OH), hydrogen bonding, boiling points, solubility trends. Classification (primary, secondary, tertiary alcohols). Reactions: Combustion, oxidation (to aldehydes, ketones, or carboxylic acids), dehydration (to form alkenes), and nucleophilic substitution. Haloalkanes: Nucleophilic substitution mec...