GCSE Separate Sciences B (Twenty First Century) (OCR)

74 free revision lessons in 16 units. Open the course or go straight to a lesson.

Biology: You and Your Genes

Genome, inheritance, and the choices that gene technology opens up.

1. Genome, DNA and Cells
2. Inheritance and Single-Gene Crosses
3. Mutations and Variation
4. Gene Technology and Ethics

Biology: Keeping Healthy

Pathogens, immunity, and how lifestyle choices shape disease risk.

1. Pathogens and Disease
2. Stopping Infection — Vaccination and Hygiene
3. Lifestyle, Genes and Non-Communicable Disease
4. Treating Disease — Drugs and Trials

Biology: Life on Earth and Ecosystems

Producers, food webs and the case for protecting biodiversity.

1. Photosynthesis and Plant Growth
2. Ecosystems and Interdependence
3. Carbon, Nitrogen and Water Cycles
4. Evolution by Natural Selection
5. Biodiversity and Classification

Biology: The Human Body

Cells, transport, nervous and hormonal control of the body.

1. Cellular Respiration and Cell Structures
2. Growth, Stem Cells and Plant Hormones
3. Transport in the Body
4. Nervous System and Reflexes
5. Hormones, Homeostasis and Reproduction

Chemistry: Earth, Air and Water

Atmosphere, climate change, energy in reactions and clean water.

1. The Earth's Atmosphere Through Time
2. Energy in Chemical Reactions
3. Climate Change — Evidence and Response
4. Potable Water

Chemistry: Atoms, Patterns and Bonding

From atomic models to the bonds that build everything around us.

1. Atomic Models — Dalton to Bohr
2. The Periodic Table and Its Patterns
3. Ionic, Covalent and Metallic Bonding
4. Equations and Calculations

Chemistry: Materials and Reactions

Metals, polymers, electrolysis and the chemistry of crude oil.

1. Metals and Reactivity
2. Electrolysis
3. Crude Oil and Hydrocarbons
4. Polymers, Bonding and Materials
5. Nanoparticles and End-of-Life

Chemistry: Analysis and Useful Products

Identifying chemicals, controlling reactions and industrial chemistry.

1. Separation, Purity and Chromatography
2. Acids, Alkalis and Useful Products
3. Rates and Yields
4. Industrial Chemistry — The Haber Process

Physics: Radiation and Waves

Light, sound, the EM spectrum and the climate-energy balance.

1. The EM Spectrum and its Risks
2. Climate Models and Earth's Energy Balance
3. Wave Behaviour — Reflection, Refraction, Diffraction
4. Light, Sound and Materials

Physics: Energy and Electricity

How we use energy, generate electricity and design circuits.

1. Energy Use and Sustainable Sources
2. Static Electricity and Electric Charge
3. Series and Parallel Circuits
4. Power, Energy and Mains Electricity
5. Magnetism, Motors and Generators

Physics: Forces, Motion and Radioactivity

Newton's laws, energy in motion and the science of the nucleus.

1. Forces and Motion — The Basics
2. Describing Motion — Speed, Velocity, Acceleration
3. Energy in Motion — Crumple Zones and Momentum
4. Radioactivity and Half-Life
5. Using Radioactive Materials Safely

Physics: Particle Models and the Universe

How matter behaves, from gases to stress to the Big Bang.

1. Energy Transforming Matter — States and Heating
2. Solids, Springs and Hooke's Law
3. Gases, Pressure and Fluids
4. Stars, Galaxies and the Big Bang

Higher Calculations

Drill the 6 high-stakes calculation skills in chemistry and physics.

1. Mole Calculations
2. Concentration and Titration
3. Yield and Atom Economy
4. Forces, Acceleration and Motion Equations
5. Energy, Power and Efficiency
6. Waves, Half-Life and Density

Physics Calculations

Drill the calculations that show up across every physics paper.

1. Energy: KE, GPE and Power
2. Efficiency and Energy Resources
3. Circuit Calculations
4. Electrical Power and Energy Bills
5. Density, SHC and Latent Heat
6. Forces, Work Done and Elasticity
7. Speed, Acceleration and Graphs
8. Newton's Laws, Momentum and Waves

Chemistry Calculations

Mole, mass and rate calculations that examiners reliably ask.

1. Relative Formula Mass and Moles
2. Balancing Equations and Reacting Masses
3. Bond Energy Calculations
4. Rates from Graphs and Concentrations

Biology Data Skills

Magnification, genetics ratios and data-handling that examiners build whole questions around.

1. Magnification and Unit Conversions
2. Punnett Squares and Genetic Probability
3. Sampling, Mean and Percentage Change

How to revise Separate Sciences B (Twenty First Century)

• Retrieval Practice
• Spaced Repetition
• Interleaving
• Dual Coding
• Elaborative Interrogation
• Knowledge Organisers
• Timed Practice

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