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Gateway Science - Combined Science A - J250
19 sections available · 45 chapters available
Free Gateway Science - Combined Science A - J250 revision notes for Cambridge OCR GCSE (9-1) students. Each chapter covers a key topic with worked examples and practice prompts you can take straight into the thinka app.
Biology - Cell level systems
Cell structures
What happens in cells (and what do cells need)?
Respiration
Photosynthesis
Biology - Scaling up
Supplying the cell
The challenges of size
Biology - Organism level systems
Coordination and control – the nervous system
Coordination and control – the endocrine system
Maintaining internal environments
Biology - Community level systems
Ecosystems
Biology - Genes, inheritance and selection
Inheritance
Natural selection and evolution
Biology - Global challenges
Monitoring and maintaining the environment
Feeding the human race
Monitoring and maintaining health
Chemistry - Particles
The particle model
Atomic structure
Chemistry - Elements, compounds and mixtures
Purity and separating mixtures
Bonding
Properties of materials
Chemistry - Chemical reactions
Introducing chemical reactions
Energetics
Types of chemical reactions
Electrolysis
Chemistry - Predicting and identifying reactions and products
Predicting chemical reactions
Chemistry - Monitoring and controlling chemical reactions
Controlling reactions
Equilibria
Chemistry - Global challenges
Improving processes and products
Interpreting and interacting with Earth systems
Physics - Matter
The particle model
Changes of state
Physics - Forces
Motion
Newton’s laws
Forces in action
Physics - Electricity and magnetism
Static and Charge
Simple circuits
Magnets and magnetic fields
Physics - Waves and radioactivity
Wave behaviour
The electromagnetic spectrum
Radioactivity
Physics - Energy
Work done
Power and efficiency
Physics - Global challenges
Physics on the move
Powering Earth
Practical skills
Practical skills (Topic CS7): planning, apparatus and techniques, analysis and evaluation
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