AQA GCSE Combined Science topics

• BBiology Practise all
  • 4.1Cell biology Practise all
    • 4.1.1Cell structure Practise all
      • 4.1.1.1Eukaryotes and prokaryotes
      • 4.1.1.2Animal and plant cells
      • 4.1.1.3Cell specialisation
      • 4.1.1.4Cell differentiation
      • 4.1.1.5Microscopy
    • 4.1.2Cell division Practise all
      • 4.1.2.1Chromosomes
      • 4.1.2.2Mitosis and the cell cycle
      • 4.1.2.3Stem cells
    • 4.1.3Transport in cells Practise all
      • 4.1.3.1Diffusion
      • 4.1.3.2Osmosis
      • 4.1.3.3Active transport
  • 4.2Organisation Practise all
    • 4.2.1Principles of organisation
    • 4.2.2Animal tissues, organs and organ systems Practise all
      • 4.2.2.1The human digestive system
      • 4.2.2.2The heart and blood vessels
      • 4.2.2.3Blood
      • 4.2.2.4Coronary heart disease: a non-communicable disease
      • 4.2.2.5Health issues
      • 4.2.2.6The effect of lifestyle on some non-communicable diseases
      • 4.2.2.7Cancer
    • 4.2.3Plant tissues, organs and systems Practise all
      • 4.2.3.1Plant tissues
      • 4.2.3.2Plant organ system
  • 4.3Infection and response Practise all
    • 4.3.1Communicable diseases Practise all
      • 4.3.1.1Communicable (infectious) diseases
      • 4.3.1.2Viral diseases
      • 4.3.1.3Bacterial diseases
      • 4.3.1.4Fungal diseases
      • 4.3.1.5Protist diseases
      • 4.3.1.6Human defence systems
      • 4.3.1.7Vaccination
      • 4.3.1.8Antibiotics and painkillers
      • 4.3.1.9Discovery and development of drugs
  • 4.4Bioenergetics Practise all
    • 4.4.1Photosynthesis Practise all
      • 4.4.1.1Photosynthetic reaction
      • 4.4.1.2Rate of photosynthesis
      • 4.4.1.3Uses of glucose from photosynthesis
    • 4.4.2Respiration Practise all
      • 4.4.2.1Aerobic and anaerobic respiration
      • 4.4.2.2Response to exercise
      • 4.4.2.3Metabolism
  • 4.5Homeostasis and response Practise all
    • 4.5.1Homeostasis
    • 4.5.2The human nervous system
    • 4.5.3Hormonal coordination in humans Practise all
      • 4.5.3.1Human endocrine system
      • 4.5.3.2Control of blood glucose concentration
      • 4.5.3.3Hormones in human reproduction
      • 4.5.3.4Contraception
      • 4.5.3.5The use of hormones to treat infertility (HT only)
      • 4.5.3.6Feedback systems (HT only)
  • 4.6Inheritance, variation and evolution Practise all
    • 4.6.1Reproduction Practise all
      • 4.6.1.1Sexual and asexual reproduction
      • 4.6.1.2Meiosis
      • 4.6.1.3DNA and the genome
      • 4.6.1.4Genetic inheritance
      • 4.6.1.5Inherited disorders
      • 4.6.1.6Sex determination
    • 4.6.2Variation and evolution Practise all
      • 4.6.2.1Variation
      • 4.6.2.2Evolution
      • 4.6.2.3Selective breeding
      • 4.6.2.4Genetic engineering
    • 4.6.3The development of understanding of genetics and evolution Practise all
      • 4.6.3.1Evidence for evolution
      • 4.6.3.2Fossils
      • 4.6.3.3Extinction
      • 4.6.3.4Resistant bacteria
    • 4.6.4Classification of living organisms
  • 4.7Ecology Practise all
    • 4.7.1Adaptations, interdependence and competition Practise all
      • 4.7.1.1Communities
      • 4.7.1.2Abiotic factors
      • 4.7.1.3Biotic factors
      • 4.7.1.4Adaptations
    • 4.7.2Organisation of an ecosystem Practise all
      • 4.7.2.1Levels of organisation
      • 4.7.2.2How materials are cycled
    • 4.7.3Biodiversity and the effect of human interaction on ecosystems Practise all
      • 4.7.3.1Biodiversity
      • 4.7.3.2Waste management
      • 4.7.3.3Land use
      • 4.7.3.4Deforestation
      • 4.7.3.5Global warming
      • 4.7.3.6Maintaining biodiversity
• CChemistry Practise all
  • 5.1Atomic structure and the periodic table Practise all
    • 5.1.1A simple model of the atom, symbols, relative atomic mass, Practise all
      • 5.1.1.1Atoms, elements and compounds
      • 5.1.1.2Mixtures
      • 5.1.1.3The development of the model of the atom
      • 5.1.1.4Relative electrical charges of subatomic particles
      • 5.1.1.5Size and mass of atoms
      • 5.1.1.6Relative atomic mass
      • 5.1.1.7Electronic structure
    • 5.1.2The periodic table Practise all
      • 5.1.2.1The periodic table
      • 5.1.2.2Development of the periodic table
      • 5.1.2.3Metals and non-metals
      • 5.1.2.4Group 0
      • 5.1.2.5Group 1
      • 5.1.2.6Group 7
  • 5.2Bonding, structure, and the properties of matter Practise all
    • 5.2.1Chemical bonds, ionic, covalent and metallic Practise all
      • 5.2.1.1Chemical bonds
      • 5.2.1.2Ionic bonding
      • 5.2.1.3Ionic compounds
      • 5.2.1.4Covalent bonding
      • 5.2.1.5Metallic bonding
    • 5.2.2How bonding and structure are related to the properties of Practise all
      • 5.2.2.1The three states of matter
      • 5.2.2.2State symbols
      • 5.2.2.3Properties of ionic compounds
      • 5.2.2.4Properties of small molecules
      • 5.2.2.5Polymers
      • 5.2.2.6Giant covalent structures
      • 5.2.2.7Properties of metals and alloys
      • 5.2.2.8Metals as conductors
    • 5.2.3Structure and bonding of carbon Practise all
      • 5.2.3.1Diamond
      • 5.2.3.2Graphite
      • 5.2.3.3Graphene and fullerenes
  • 5.3Quantitative chemistry Practise all
    • 5.3.1Chemical measurements, conservation of mass and the Practise all
      • 5.3.1.1Conservation of mass and balanced chemical equations
      • 5.3.1.2Relative formula mass
      • 5.3.1.3Mass changes when a reactant or product is a gas
      • 5.3.1.4Chemical measurements
    • 5.3.2Use of amount of substance in relation to masses of pure Practise all
      • 5.3.2.1Moles (HT only)
      • 5.3.2.2Amounts of substances in equations (HT only)
      • 5.3.2.3Using moles to balance equations (HT only)
      • 5.3.2.4Limiting reactants (HT only)
      • 5.3.2.5Concentration of solutions
  • 5.4Chemical changes Practise all
    • 5.4.1Reactivity of metals Practise all
      • 5.4.1.1Metal oxides
      • 5.4.1.2The reactivity series
      • 5.4.1.3Extraction of metals and reduction
      • 5.4.1.4Oxidation and reduction in terms of electrons (HT only)
    • 5.4.2Reactions of acids Practise all
      • 5.4.2.1Reactions of acids with metals
      • 5.4.2.2Neutralisation of acids and salt production
      • 5.4.2.3Soluble salts
      • 5.4.2.4The pH scale and neutralisation
      • 5.4.2.5Strong and weak acids (HT only)
    • 5.4.3Electrolysis Practise all
      • 5.4.3.1The process of electrolysis
      • 5.4.3.2Electrolysis of molten ionic compounds
      • 5.4.3.3Using electrolysis to extract metals
      • 5.4.3.4Electrolysis of aqueous solutions
      • 5.4.3.5Representation of reactions at electrodes as half equations (HT only)
  • 5.5Energy changes Practise all
    • 5.5.1Exothermic and endothermic reactions Practise all
      • 5.5.1.1Energy transfer during exothermic and endothermic reactions
      • 5.5.1.2Reaction profiles
      • 5.5.1.3The energy change of reactions (HT only)
  • 5.6The rate and extent of chemical change Practise all
    • 5.6.1Rate of reaction Practise all
      • 5.6.1.1Calculating rates of reactions
      • 5.6.1.2Factors which affect the rates of chemical reactions
      • 5.6.1.3Collision theory and activation energy
      • 5.6.1.4Catalysts
    • 5.6.2Reversible reactions and dynamic equilibrium Practise all
      • 5.6.2.1Reversible reactions
      • 5.6.2.2Energy changes and reversible reactions
      • 5.6.2.3Equilibrium
      • 5.6.2.4The effect of changing conditions on equilibrium (HT only)
      • 5.6.2.5The effect of changing concentration (HT only)
      • 5.6.2.6The effect of temperature changes on equilibrium (HT only)
      • 5.6.2.7The effect of pressure changes on equilibrium (HT only)
  • 5.7Organic chemistry Practise all
    • 5.7.1Carbon compounds as fuels and feedstock Practise all
      • 5.7.1.1Crude oil, hydrocarbons and alkanes
      • 5.7.1.2Fractional distillation and petrochemicals
      • 5.7.1.3Properties of hydrocarbons
      • 5.7.1.4Cracking and alkenes
  • 5.8Chemical analysis Practise all
    • 5.8.1Purity, formulations and chromatography Practise all
      • 5.8.1.1Pure substances
      • 5.8.1.2Formulations
      • 5.8.1.3Chromatography
    • 5.8.2Identification of common gases Practise all
      • 5.8.2.1Test for hydrogen
      • 5.8.2.2Test for oxygen
      • 5.8.2.3Test for carbon dioxide
      • 5.8.2.4Test for chlorine
  • 5.9Chemistry of the atmosphere Practise all
    • 5.9.1The composition and evolution of the Earth's atmosphere Practise all
      • 5.9.1.1The proportions of different gases in the atmosphere
      • 5.9.1.2The Earth's early atmosphere
      • 5.9.1.3How oxygen increased
      • 5.9.1.4How carbon dioxide decreased
    • 5.9.2Carbon dioxide and methane as greenhouse gases Practise all
      • 5.9.2.1Greenhouse gases
      • 5.9.2.2Human activities which contribute to an increase in greenhouse gases in the atmosphere
      • 5.9.2.3Global climate change
      • 5.9.2.4The carbon footprint and its reduction
    • 5.9.3Common atmospheric pollutants and their sources Practise all
      • 5.9.3.1Atmospheric pollutants from fuels
      • 5.9.3.2Properties and effects of atmospheric pollutants
  • 5.10Using resources Practise all
    • 5.10.1Using the Earth's resources and obtaining potable water Practise all
      • 5.10.1.1Using the Earth's resources and sustainable development
      • 5.10.1.2Potable water
      • 5.10.1.3Waste water treatment
      • 5.10.1.4Alternative methods of extracting metals (HT only)
    • 5.10.2Life cycle assessment and recycling Practise all
      • 5.10.2.1Life cycle assessment
      • 5.10.2.2Ways of reducing the use of resources
• PPhysics Practise all
  • 6.1Energy Practise all
    • 6.1.1Energy changes in a system, and the ways energy is stored Practise all
      • 6.1.1.1Energy stores and systems
      • 6.1.1.2Changes in energy
      • 6.1.1.3Energy changes in systems
      • 6.1.1.4Power
    • 6.1.2Conservation and dissipation of energy Practise all
      • 6.1.2.1Energy transfers in a system
      • 6.1.2.2Efficiency
    • 6.1.3National and global energy resources
  • 6.2Electricity Practise all
    • 6.2.1Current, potential difference and resistance Practise all
      • 6.2.1.1Standard circuit diagram symbols
      • 6.2.1.2Electrical charge and current
      • 6.2.1.3Current, resistance and potential difference
      • 6.2.1.4Resistors
    • 6.2.2Series and parallel circuits
    • 6.2.3Domestic uses and safety Practise all
      • 6.2.3.1Direct and alternating potential difference
      • 6.2.3.2Mains electricity
    • 6.2.4Energy transfers Practise all
      • 6.2.4.1Power
      • 6.2.4.2Energy transfers in everyday appliances
      • 6.2.4.3The National Grid
  • 6.3Particle model of matter Practise all
    • 6.3.1Changes of state and the particle model Practise all
      • 6.3.1.1Density of materials
      • 6.3.1.2Changes of state
    • 6.3.2Internal energy and energy transfers Practise all
      • 6.3.2.1Internal energy
      • 6.3.2.2Temperature changes in a system and specific heat capacity
      • 6.3.2.3Changes of state and specific latent heat
    • 6.3.3Particle model and pressure Practise all
      • 6.3.3.1Particle motion in gases
  • 6.4Atomic structure Practise all
    • 6.4.1Atoms and isotopes Practise all
      • 6.4.1.1The structure of an atom
      • 6.4.1.2Mass number, atomic number and isotopes
      • 6.4.1.3The development of the model of the atom
    • 6.4.2Atoms and nuclear radiation Practise all
      • 6.4.2.1Radioactive decay and nuclear radiation
      • 6.4.2.2Nuclear equations
      • 6.4.2.3Half-lives and the random nature of radioactive decay
      • 6.4.2.4Radioactive contamination
  • 6.5Forces Practise all
    • 6.5.1Forces and their interactions Practise all
      • 6.5.1.1Scalar and vector quantities
      • 6.5.1.2Contact and non-contact forces
      • 6.5.1.3Gravity
      • 6.5.1.4Resultant forces
    • 6.5.2Work done and energy transfer
    • 6.5.3Forces and elasticity
    • 6.5.4Forces and motion Practise all
      • 6.5.4.1Describing motion along a line Practise all
        • 6.5.4.1.1Distance and displacement
        • 6.5.4.1.2Speed
        • 6.5.4.1.3Velocity
        • 6.5.4.1.4The distance–time relationship
        • 6.5.4.1.5Acceleration
      • 6.5.4.2Forces, accelerations and Newton's Laws of motion Practise all
        • 6.5.4.2.1Newton's First Law
        • 6.5.4.2.2Newton's Second Law
        • 6.5.4.2.3Newton's Third Law
      • 6.5.4.3Forces and braking Practise all
        • 6.5.4.3.1Stopping distance
        • 6.5.4.3.2Reaction time
        • 6.5.4.3.3Factors affecting braking distance 1
        • 6.5.4.3.4Factors affecting braking distance 2
    • 6.5.5Momentum (HT only) Practise all
      • 6.5.5.1Momentum is a property of moving objects
      • 6.5.5.2Conservation of momentum
  • 6.6Waves Practise all
    • 6.6.1Waves in air, fluids and solids Practise all
      • 6.6.1.1Transverse and longitudinal waves
      • 6.6.1.2Properties of waves
    • 6.6.2Electromagnetic waves Practise all
      • 6.6.2.1Types of electromagnetic waves
      • 6.6.2.2Properties of electromagnetic waves 1
      • 6.6.2.3Properties of electromagnetic waves 2
      • 6.6.2.4Uses and applications of electromagnetic waves
  • 6.7Magnetism and electromagnetism Practise all
    • 6.7.1Permanent and induced magnetism, magnetic forces and fields Practise all
      • 6.7.1.1Poles of a magnet
      • 6.7.1.2Magnetic fields
    • 6.7.2The motor effect Practise all
      • 6.7.2.1Electromagnetism
      • 6.7.2.2Fleming's left-hand rule (HT only)
      • 6.7.2.3Electric motors (HT only)

Guides to the Combined Science required practicals: method, variables and exam tips.

• Microscopy (Biology)
• Osmosis (Biology)
• Food tests (Biology)
• Enzymes (Biology)
• Photosynthesis (Biology)
• Reaction time (Biology)
• Field investigations (Biology)
• Making salts (Chemistry)
• Electrolysis of aqueous solutions (Chemistry)
• Temperature changes (Chemistry)
• Rates of reaction (Chemistry)
• Chromatography (Chemistry)
• Water purification (Chemistry)
• Specific heat capacity (Physics)
• Resistance (Physics)
• I–V characteristics (Physics)
• Density (Physics)
• Force and extension (Physics)
• Acceleration (Physics)
• Waves (Physics)
• Radiation and absorption (Physics)