Specification points
Cambridge Cambridge O Level Chemistry 5070
288 points in 12 topics, with Cambridge's codes and titles.
Grade boundaries·Cambridge command words
Codes and titles are read by a script from Cambridge's published specification and have not been checked by a person. What each point covers is in the specification itself: Cambridge’s specification.
1 States of matter
- 1.1 Solids, liquids and gases
- 1.1.1 Properties of solids, liquids and gases
- 1.1.2 Particle structure of solids, liquids and gases
- 1.1.3 Changes of state and kinetic theory
- 1.1.4 Heating and cooling curves
- 1.1.5 Temperature, pressure and gas volume
- 1.2 Diffusion
- 1.2.1 Diffusion and kinetic particle theory
- 1.2.2 Molecular mass and rate of diffusion
2 Atoms, elements and compounds
- 2.1 Elements, compounds and mixtures
- 2.1.1 Elements, compounds and mixtures
- 2.2 Atomic structure and the Periodic Table
- 2.2.1 Structure of the atom
- 2.2.2 Charges and masses of subatomic particles
- 2.2.3 Proton number
- 2.2.4 Mass number
- 2.2.5 Electronic configuration
- 2.2.6 Electron shells, groups and periods
- 2.3 Isotopes
- 2.3.1 Isotopes
- 2.3.2 Chemical properties of isotopes
- 2.3.3 Symbols for atoms and ions
- 2.3.4 Relative atomic mass from isotopes
- 2.4 Ion and ionic bonds
- 2.4.1 Formation of cations and anions
- 2.4.2 Giant ionic lattices
- 2.4.3 Ionic bonds
- 2.4.4 Ionic bonding between metals and non-metals
- 2.4.5 Explaining properties of ionic compounds
- 2.5 Simple molecules and covalent bonds
- 2.5.1 Covalent bonds
- 2.5.2 Covalent bonding in simple molecules
- 2.5.3 Explaining properties of simple molecular compounds
- 2.6 Giant covalent structures
- 2.6.1 Giant covalent structures
- 2.6.2 Uses of graphite and diamond
- 2.6.3 Diamond and silicon(IV) oxide compared
- 2.7 Metallic bonding
- 2.7.1 Metallic bonding
- 2.7.2 Explaining properties of metals
3 Stoichiometry
- 3.1 Formulae
- 3.1.1 Formulae of named substances
- 3.1.2 Molecular formula
- 3.1.3 Empirical formula
- 3.1.4 Deducing formulae from models
- 3.1.5 Formulae of ionic compounds from charges
- 3.1.6 Word, symbol and ionic equations
- 3.1.7 Deducing symbol equations
- 3.2 Relative masses of atoms and molecules
- 3.2.1 Relative atomic mass
- 3.2.2 Relative molecular and formula mass
- 3.3 The mole and the Avogadro constant
- 3.3.1 The mole and the Avogadro constant
- 3.3.2 Calculations with moles and molar mass
- 3.3.3 Molar gas volume
- 3.3.4 Units of concentration
- 3.3.5 Stoichiometric calculations
- 3.3.6 Titration calculations
- 3.3.7 Calculating empirical and molecular formulae
- 3.3.8 Percentage yield, composition and purity
4 Electrochemistry
- 4.1 Electrolysis
- 4.1.1 Electrolysis
- 4.1.2 Parts of an electrolytic cell
- 4.1.3 Charge transfer in electrolysis
- 4.1.4 Products of electrolysis of common electrolytes
- 4.1.5 Electrolysis of copper(II) sulfate
- 4.1.6 Products at the cathode and anode
- 4.1.7 Electrolysis of molten binary compounds
- 4.1.8 Electrolysis of aqueous halides
- 4.1.9 Ionic half-equations at electrodes
- 4.1.10 Purpose of electroplating
- 4.1.11 How electroplating works
- 4.2 Hydrogen–oxygen fuel cells
- 4.2.1 Hydrogen–oxygen fuel cells
- 4.2.2 Fuel cells versus petrol engines
5 Chemical energetics
6 Chemical reactions
- 6.1 Physical and chemical changes
- 6.1.1 Physical and chemical changes
- 6.2 Rate of reaction
- 6.2.1 Collision theory
- 6.2.2 Catalysts and activation energy
- 6.2.3 Explaining factors affecting rate
- 6.2.4 Evaluating rate investigation methods
- 6.2.5 Interpreting rate data
- 6.3 Reversible reactions and equilibrium
- 6.3.1 Reversible reactions
- 6.3.2 Reversing reactions of hydrated and anhydrous salts
- 6.3.3 Equilibrium in a closed system
- 6.3.4 Position of equilibrium
- 6.3.5 Haber process equation
- 6.3.6 Raw materials for the Haber process
- 6.3.7 Conditions in the Haber process
- 6.3.8 Contact process equation
- 6.3.9 Raw materials for the Contact process
- 6.3.10 Conditions in the Contact process
- 6.3.11 Choice of conditions in Haber and Contact processes
- 6.4 Redox
- 6.4.1 Roman numerals for oxidation number
- 6.4.2 Redox reactions
- 6.4.3 Definitions of oxidation
- 6.4.4 Definitions of reduction
- 6.4.5 Identifying redox reactions
- 6.4.6 Oxidation number changes in redox
- 6.4.7 Colour change tests for redox
- 6.4.8 Oxidising agents
- 6.4.9 Reducing agents
- 6.4.10 Identifying oxidising and reducing agents
7 Acids, bases and salts
- 7.1 The characteristic properties of acids and bases
- 7.1.1 Hydrogen and hydroxide ions in solution
- 7.1.2 Acids as proton donors
- 7.1.3 Bases and alkalis
- 7.1.4 Reactions of acids
- 7.1.5 Reactions of bases
- 7.1.6 Neutralisation
- 7.1.7 Ionic equation for neutralisation
- 7.1.8 Acids, alkalis and indicators
- 7.1.9 Strong and weak acids
- 7.1.10 Strong acids and complete dissociation
- 7.1.11 Weak acids and partial dissociation
- 7.1.12 pH and universal indicator
- 7.2 Oxides
- 7.2.1 Amphoteric oxides
- 7.2.2 Classifying oxides
- 7.3 Preparation of salts
- 7.3.1 Preparing soluble salts
- 7.3.2 Preparing insoluble salts by precipitation
- 7.3.3 Solubility rules for salts
- 7.3.4 Hydrated and anhydrous substances
- 7.3.5 Water of crystallisation
8 The Periodic Table
- 8.1 Arrangement of elements
- 8.1.1 Arrangement of the Periodic Table
- 8.1.2 Metallic to non-metallic character across a period
- 8.1.3 Group number and ion charge
- 8.1.4 Group similarities and electronic configuration
- 8.1.5 Predicting properties from position
- 8.1.6 Identifying trends in groups
- 8.2 Group I properties
- 8.2.1 Group I alkali metals
- 8.2.2 Predicting Group I properties
- 8.3 Group VII properties
- 8.3.1 Group VII halogens
- 8.3.2 Appearance of the halogens
- 8.3.3 Halogen displacement reactions
- 8.3.4 Predicting Group VII properties
- 8.4 Transition elements
- 8.4.1 Transition elements
- 8.5 Noble gases
- 8.5.1 Noble gases
9 Metals
- 9.1 Properties of metals
- 9.1.1 Physical properties of metals and non-metals
- 9.1.2 Chemical properties of metals
- 9.2 Uses of metals
- 9.2.1 Uses of metals
- 9.3 Alloys and their properties
- 9.3.1 Alloys
- 9.3.2 Why alloys are harder
- 9.3.3 Uses of alloys
- 9.3.4 Identifying alloys from structure diagrams
- 9.4 Reactivity series
- 9.4.1 Reactivity series
- 9.4.2 Reactivity and displacement reactions
- 9.4.3 Reactions of metals with water, steam and acid
- 9.4.4 Unreactivity of aluminium
- 9.4.5 Deducing reactivity from results
- 9.5 Corrosion of metals
- 9.5.1 Conditions for rusting
- 9.5.2 How barrier methods prevent rusting
- 9.5.3 Barrier methods
- 9.5.4 Sacrificial protection
- 9.5.5 Galvanising
- 9.6 Extraction of metals
- 9.6.1 Ease of metal extraction
- 9.6.2 Extraction of iron in the blast furnace
- 9.6.3 Extraction of aluminium by electrolysis
10 Chemistry of the environment
- 10.1 Water
- 10.1.1 Chemical tests for water
- 10.1.2 Testing water purity
- 10.1.3 Why distilled water is used
- 10.1.4 Substances in natural water
- 10.1.5 Beneficial substances in water
- 10.1.6 Harmful substances in water
- 10.1.7 Treatment of domestic water
- 10.2 Fertilisers
- 10.2.1 Ammonium salts and nitrates as fertilisers
- 10.2.2 NPK fertilisers
- 10.3 Air quality and climate
- 10.3.1 Composition of clean air
- 10.3.2 Sources of air pollutants
- 10.3.3 Effects of air pollutants
- 10.3.4 Greenhouse gases and global warming
- 10.3.5 Reducing environmental issues
- 10.3.6 Nitrogen oxides and catalytic converters
- 10.3.7 Photosynthesis in the carbon cycle
- 10.3.8 Photosynthesis equations
11 Organic chemistry
- 11.1 Formulae, functional groups and terminology
- 11.1.1 Structural formulae
- 11.1.2 Displayed formulae
- 11.1.3 General formulae of homologous series
- 11.1.4 Structural isomers
- 11.1.5 Functional groups
- 11.1.6 Characteristics of a homologous series
- 11.1.7 Saturated compounds
- 11.1.8 Unsaturated compounds
- 11.2 Naming organic compounds
- 11.2.1 Naming unbranched organic compounds
- 11.2.2 Identifying compound type from name or formula
- 11.2.3 Naming and drawing esters
- 11.3 Fuels
- 11.3.1 Fossil fuels
- 11.3.2 Methane in natural gas
- 11.3.3 Hydrocarbons
- 11.3.4 Petroleum as a mixture
- 11.3.5 Fractional distillation of petroleum
- 11.3.6 Trends in petroleum fractions
- 11.3.7 Uses of petroleum fractions
- 11.4 Alkanes
- 11.4.1 Bonding in alkanes
- 11.4.2 Properties of alkanes
- 11.4.3 Substitution reactions
- 11.4.4 Photochemical substitution with chlorine
- 11.5 Alkenes
- 11.5.1 Bonding in alkenes
- 11.5.2 Cracking
- 11.5.3 Reasons for cracking
- 11.5.4 Bromine water test for unsaturation
- 11.5.5 Addition reactions
- 11.5.6 Addition reactions of alkenes
- 11.6 Alcohols
- 11.6.1 Manufacture of ethanol
- 11.6.2 Combustion of alcohols
- 11.6.3 Uses of ethanol
- 11.7 Carboxylic acids
- 11.7.1 Reactions of carboxylic acids
- 11.7.2 Oxidation of ethanol to ethanoic acid
- 11.7.3 Esterification
- 11.8 Polymers
- 11.8.1 Polymers and monomers
- 11.8.2 Repeat units and linkages in polymers
- 11.8.3 Addition polymers and their monomers
- 11.8.4 Condensation polymers: polyamides and polyesters
- 11.8.5 Addition versus condensation polymerisation
- 11.8.6 Plastics from polymers
- 11.8.7 Properties of plastics and disposal
- 11.8.8 Environmental challenges of plastics
- 11.8.9 Structures of nylon and PET
- 11.8.10 Recycling PET into monomers
- 11.8.11 Proteins as natural polyamides
- 11.8.12 Structure of proteins
12 Experimental techniques and chemical analysis
- 12.1 Experimental design
- 12.1.1 Measuring apparatus
- 12.1.2 Pros and cons of methods and apparatus
- 12.1.3 Solvents, solutes and solutions
- 12.2 Acid–base titrations
- 12.2.1 Acid–base titration
- 12.2.2 Titration end-point
- 12.3 Chromatography
- 12.3.1 Paper chromatography
- 12.3.2 Locating agents
- 12.3.3 Interpreting chromatograms
- 12.3.4 Rf values
- 12.4 Separation and purification
- 12.4.1 Separation and purification methods
- 12.4.2 Choosing separation techniques
- 12.4.3 Purity from melting and boiling points
- 12.5 Identification of ions and gases
- 12.5.1 Tests for anions
- 12.5.2 Tests for aqueous cations
- 12.5.3 Tests for gases
- 12.5.4 Flame tests