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Gateway to A*

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I have just graduated high school achieving 3A* at A Level in Maths, Chemistry and Biology. I am currently studying Medicine at St George's University of London. Over the 2 years, I have made detailed notes on the OCR Chemistry A specification and AQA Biology specification. I ranked highly in my cohort for Chemistry and Biology (2/122 and 3/91). I hope these notes will help you in your A Level study.

I have just graduated high school achieving 3A* at A Level in Maths, Chemistry and Biology. I am currently studying Medicine at St George's University of London. Over the 2 years, I have made detailed notes on the OCR Chemistry A specification and AQA Biology specification. I ranked highly in my cohort for Chemistry and Biology (2/122 and 3/91). I hope these notes will help you in your A Level study.
A Level Chemistry - Carbonyl and Carboxylic Acid
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A Level Chemistry - Carbonyl and Carboxylic Acid

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Complete OCR A Level Chemistry notes on carbonyl and carboxylic acids with diagrams, definitions to support your understanding. Details include: Formation of carbonyl compounds Nucleophilic addition mechanism of C=O Reactions of carbonyl compounds Identification of aldehydes and ketones Distinguish between aldehydes and ketones Reaction of carboxylic acids Test for carboxyl group Derivaties of carboxylic acid Acid and base hydrolysis of esters Preparation of esters Acyl chlorides Reactions of acid anhydrides
A Level Biology Notes - Recombinant DNA Technology
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A Level Biology Notes - Recombinant DNA Technology

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Complete AQA A Level Biology notes on recombinant DNA technology with diagrams, definitions to support your understanding. Details include: Producing DNA fragments In vivo gene cloning Marker genes In vitro gene cloning (PCR) Locating genes Genetic fingerprinting Gel electrophoresis
A Level Chemistry - Buffers
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A Level Chemistry - Buffers

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Complete OCR A Level Chemistry notes on buffers with diagrams, definitions to support your understanding. Details include: Formation of buffers Action of buffers in our body Worked examples of buffer calculations pH curves Indicators Explaining indicator colour changes End point sensitivity Choosing the right indicator
A Level Chemistry - Chromatography
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A Level Chemistry - Chromatography

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Complete OCR A Level Chemistry notes on chromatography with diagrams, definitions to support your understanding. Details include: Paper chromatography (TLC) Gas chromatography Interpretations of gas chromatography
A Level Biology Notes - Photosynthesis
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A Level Biology Notes - Photosynthesis

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Complete AQA A Level Biology notes on photosynthesis with diagrams, definitions to support your understanding. Details include: Light dependent reaction Light independent reaction Effect of temperature on LID and LDR Limiting factors
A Level Biology Notes - Gene Expression
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A Level Biology Notes - Gene Expression

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Complete AQA A Level Biology notes on gene expression with diagrams, definitions to support your understanding. Details include: Gene mutations Causes of mutations Stem cells and totipotency Induced pluripotent stem cells Regulation of transcription and translation Effect of oestrogen on gene transcription Epigenetic control of gene expression RNA interference on gene expression Gene expression and cancer Oncogenes and tumour supressor genes Genome projects
A Level Biology Notes - Energy and Ecosystem
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A Level Biology Notes - Energy and Ecosystem

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Complete AQA A Level Biology notes on energy and ecosystem with diagrams, definitions to support your understanding. Details include: Definition of keywords Energy transfer and productivity Nitrogen cycle Phosphate cycle Fertilisers Environmental effects (eutrophication)
AS Chemistry - Alcohols
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AS Chemistry - Alcohols

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Detailed explanations of the things you need to know about alcohols at AS Level for Chemistry. Diagrams, definitions and explanations included!
AS Chemistry Alkenes
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AS Chemistry Alkenes

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Detailed explanations of Alkenes at AS Level with reaction mechanism, stereoisomerism, tests for alkenes and addition polymerisation.
AS Chemistry - Structure and Bonding
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AS Chemistry - Structure and Bonding

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Detailed explanations of the structure and bonding of different molecules and compounds. Diagrams of different shape of molecules with bond angles, intermolecular forces and electronegativity.
A Level Chemistry - Acids and Bases
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A Level Chemistry - Acids and Bases

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Complete OCR A Level Chemistry notes on acids and bases with diagrams, definitions to support your understanding. Details include: Acid dissociation constant Ka Approximations with Ka Ionic product of water Kw.
A Level Chemistry - Aromatic Compounds
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A Level Chemistry - Aromatic Compounds

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Complete OCR A Level Chemistry notes on aromatic compounds with diagrams, definitions to support your understanding. Details include: Delocalised model of benzene Evidence to disprove Kekule model Naming aromatic compounds Electrophilic substitution of benzene Arene vs Alkene reactivity Phenols Reaction of phenols Electrophilic substitution of phenol Directing groups