How topics in Organic Chemistry map to
GCSE '21st Century Science'
OCR GCSE Chemistry A - Biology A - Science A - Syllabus codes J630 - J635
Twenty First Century Science
C1-1 Air quality human activity adds oxides to the atmosphere
alkanes - fuels - air pollution
C1-1 Air quality pollutants make acids 
alkanes - fuels - acid rain
C1-2 Air quality when fuels burn
alkanes - fuels - air pollution
C1-2 Air quality when fuels burn 
alkanes - combustion
C1-2 Air quality fuels are mainly hydrocarbons 
hydrocarbons - introduction
C1-2 Air quality numbers of atoms in an equation
alkanes - combustion
C1-3 Air quality catalytic converter 
alkanes - fuels - catalytic converter
C2-1 Material choices properties of plastics rubber fibre 
polymers - elastomer
C2-1 Material choices properties of plastics rubber fibre 
polymers - proteins - wool
C2-2 Material choices materials made from living things eg rubber 
polymers – natural polymers – rubber
C2-2 Material choices materials made from living things eg rubber 
fuels - formation of oil
C2-2 Material choices atoms rearrange in a chemical reaction 
polymers - bakelite - nylon - phenol
C2-2 Material choices crude oil consists of hydrocarbons 
fuels - fractional distillation
C2-2 Material choices making polymers 
polymers – addition and condensation
C2-2 Material choices refining crude oil 
alkanes – fuels - supply and demand
C2-2 Material choices refining crude oil 
alkanes – fuels - cracking alkanes for fuel
C2-2 Material choices refining crude oil 
carbon compounds - thermal cracking of alkanes
C2-2 Material choices refining crude oil 
carbon compounds - reforming alkanes for fuel
C2-3 Material choices polymers property and structure
polymers - elastomer
C2-3 Material choices polymers property and structure
polymers - bakelite - nylon - phenol
C2-3 Material choices polymers property and structure 
polymers - polyalkenes - stereoisomers
C2-4 Material choices energy for manufacture 
polymers – addition polymers II
C3-1 Food matters natural polymers 
carbohydrates – polysaccharides
C3-1 Food matters natural polymers 
proteins – primary structure
C3-1 Food matters carbohydrates 
carbohydrates - monosaccharides
C3-1 Food matters carbohydrates 
carbohydrates – disaccharides
C3-1 Food matters carbohydrates 
carbohydrates - reducing sugars - Fehling's test
C3-1 Food matters proteins and amino acids 
proteins – tertiary structure – hydrophobic groups
C3-1 Food matters proteins and amino acids 
proteins – quaternary structure – dynamics
C3-1 Food matters proteins and amino acids 
proteins – quaternary structure - haemoglobin
C3-4 Food matters natural polymers and hydrolysis 
carbohydrates – polysaccharides – hydrolysis
C3-4 Food matters natural polymers and hydrolysis 
carbohydrates – alpha and beta glucose
C3-4 Food matters natural polymers and hydrolysis 
amino acids – hydrolysis of a peptide
C3-4 Food matters amino acids make proteins 
amino acids – structure
C3-4 Food matters amino acids make proteins
proteins – primary structure
C3-4 Food matters amino acids make proteins
proteins – quaternary structure - haemoglobin
C5-1 Chemicals of the environment boiling points effect of size of alkene 
carbon compounds - alkenes – boiling points
C5-1 Chemicals of the environment effect of intermolecular forces on boiling point 
boiling points - intermolecular forces
C5-1 Chemicals of the environment models of molecules
hydrocarbons - introduction
C5-3 Chemicals of the environment some molecular compounds
carbohydrates – disaccharides
C5-3 Chemicals of the environment some molecular compounds
proteins – quaternary structure – dynamics
C5-3 Chemicals of the environment some molecular compounds 
DNA – nucleic acids – model
C5-3 Chemicals of the environment origin of oil
fuels - formation of oil
C6-1 Chemical synthesis multislide - explaining acidity 
carboxylic acids – structure
C6-2 Chemical synthesis example of organic synthesis in the lab 
alcohols - breaking the R-OH bond - with hydrogen halide
C7-1 Alcohols carboxylic acids and esters alkanes family 
alkanes - structure - homologous series
C7-1 Alcohols carboxylic acids and esters burning alkanes
alkanes - combustion
C7-1 Alcohols carboxylic acids and esters alcohols 
alcohols - homologous series - structure
C7-1 Alcohols carboxylic acids and esters like water alcohols react with sodium 
alcohols - breaking the RO-H bond - reaction with sodium
C7-1 Alcohols carboxylic acids and esters carboxylic acids
carboxylic acids – structure
C7-1 Alcohols carboxylic acids and esters esters 
carboxylic acids – making and breaking esters
C7-1 Alcohols carboxylic acids and esters multislide - saturated and unsaturated fat structures 
alkenes - addition of hydrogen
C7-1 Alcohols carboxylic acids and esters alkenes have double bonds 
alkenes - structure - homologous series
C7-2 Energy changes
C7-3 Reversible reactions multislide - understand strong and weak acids
carboxylic acids – structure
C7-3 Reversible reactions esterification and equilibrium 
alcohols - breaking the RO-H bond - esterification
C7-4 Analysis
C7-5 Green chemistry making ethanol using ethene 
alkenes - addition with concentrated H2SO4 - mechanism
B4-2 Homeostasis explaining enzyme activity 
proteins – secondary structure - interactions
B4-2 Homeostasis explaining enzyme activity 
proteins - secondary structure - enzyme inhibitors
B4-2 Homeostasis explaining enzyme activity 
proteins – enzymes - effect of pH
B4-2 Homeostasis explaining enzyme activity 
proteins – enzymes - effect of temperature
B4-2 Homeostasis explaining enzyme activity 
proteins – enzymes – effect of concentration
B4-2 Homeostasis model of an enzyme 
proteins – secondary structure – ionic or salt bridges
B5-1 Growth and development DNA is a helix
DNA – nucleic acids – model
B5-2 Growth and development DNA RNA code for a protein 
DNA – base pairs and nucleotides
B5-2 Growth and development DNA RNA code for a protein 
DNA – nucleic acids – structure
B5-2 Growth and development DNA RNA code for a protein 
DNA – transcription to mRNA
B5-2 Growth and development DNA RNA code for a protein 
DNA – translation of mRNA to make protein
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