GCSE Combined Science B (Twenty First Century) (OCR)

63 free revision lessons in 9 units. Open the course or go straight to a lesson.

Biology Paper 1

Genes, health and ecosystems through real-world contexts.

1. The Genome and Genetic Information
2. Inheritance and Genetic Variants
3. Gene Technology and Ethics
4. Causes of Disease and Pathogens
5. Immune System, Vaccination and Treating Disease
6. Lifestyle, Genes and Non-Communicable Disease
7. Photosynthesis and Producers
8. Ecosystems, Interdependence and Population Change

Biology Paper 2

Cells, the human body and the story of life on Earth.

1. Respiration and Cellular Energy
2. Cell Structure and How We Know It
3. Growth, Development and Stem Cells
4. Transport, Circulation and Exchange Surfaces
5. Nervous System and Hormonal Coordination
6. Homeostasis: Glucose, Water and Temperature
7. Reproduction, Hormones and Failing Organs
8. Evolution, Classification and Biodiversity

Chemistry Paper 1

Air, water, atmospheric change and the chemistry of materials.

1. Earth's Atmosphere: Past and Present
2. Energy Changes in Reactions
3. Climate Change: Evidence and Causes
4. Potable Water and Treating Pollution
5. Atomic Structure and Models Through Time
6. Periodic Table and Chemical Patterns
7. Bonding: Ionic, Covalent and Metallic
8. Chemical Equations and Conservation of Mass

Chemistry Paper 2

Materials, analysis and how chemists make useful products.

1. Bonding in the Natural Environment
2. Reactivity and Metal Extraction
3. Electrolysis and Electrolytes
4. Crude Oil and the Hydrocarbon Industry
5. Material Choices and Life Cycle Assessment
6. Bonding, Structure and Why Properties Differ
7. Nanoparticles: Properties, Uses and Risks
8. Chemical Analysis: Identifying Substances

Physics Paper 1

Radiation, energy resources and how electricity gets to your home.

1. Radiation: Risks and Benefits
2. Climate Change: A Physics Perspective
3. Wave Behaviour and the EM Spectrum
4. Energy Resources and Demand
5. Generating Electricity
6. Current, Voltage and Resistance
7. Power, Energy Transfer and Bills
8. Magnetic Fields and Electric Motors

Physics Paper 2

Forces, motion, radioactivity and how we model matter.

1. Forces, Mass and Weight
2. Describing Motion
3. Forces, Acceleration and Stopping
4. Energy Stores, Transfers and Work
5. Radioactivity: Atoms and Nuclear Decay
6. Using Radioactive Materials Safely
7. Particles, Heating and the Particle Model
8. Materials Under Stress 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 Combined Science B (Twenty First Century)

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

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