Edexcel GCSE Combined Science
Explore your course, one topic at a time.
Course version · Pearson-GCSE-Combined-ScienceVersion from Mar 2026Change version
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Explore your topics
29 topics
Course topics29 topics
- Fuels and Earth science
- Key concepts in chemistry
- Key concepts in biology
- Plant structures and their functions
- Motion and forces
- Radioactivity
- Forces and matter
- Chemical change
- Health, disease and the development of medicines
- Rates of reaction and energy changes
- Animal coordination, control and homeostasis
- Exchange and transport in animals
12 of 29 shown
Assessment and exam guidance
What Gets Top Grades
Knowledge & Understanding
Demonstrates comprehensive and accurate knowledge
- Uses correct subject-specific terminology
- Shows detailed understanding of concepts
- Makes accurate connections between topics
- Demonstrates depth beyond surface-level knowledge
Application
Applies knowledge effectively to new contexts
- Selects relevant knowledge for the question
- Adapts understanding to unfamiliar scenarios
- Uses examples appropriately
- Shows awareness of context
Analysis & Evaluation
Develops sophisticated analytical arguments
- Constructs logical chains of reasoning
- Considers multiple perspectives
- Weighs evidence to reach justified conclusions
- Acknowledges limitations and nuances
Key Command Words
Give a single fact or term
Name, select, or recognise
Set out main features briefly
Give an account of what something is like or what happens
Give reasons with developed cause→effect chains
State similarities AND differences (both required)
Examine in detail showing cause→effect→consequence chains
Weigh up BOTH sides, reach JUSTIFIED conclusion
Make judgments about importance with justification
Show formula→substitution→calculation→answer with units
Tips and common mistakes
Common Exam Mistakes
Pitfalls to avoid in your exams
- •Confusing the greenhouse effect with the ozone layer depletion
- •Failing to link the decrease in CO2 to the formation of oceans
- •Misinterpreting the correlation between fossil fuel use and temperature as definitive proof without considering uncertainties
- •Incorrectly identifying the gases in the early atmosphere
- •Confusing intermolecular forces with covalent bonds when explaining melting points of simple molecular substances
- •Assuming all covalent substances have high melting points (failing to distinguish between simple molecular and giant covalent)
- •Incorrectly stating that ionic compounds conduct electricity as solids
- •Failing to mention the role of delocalised electrons when explaining metallic conductivity
Top Examiner Tips
Expert advice for exam success
- •Ensure you can distinguish between the early atmosphere and the current atmosphere
- •Be prepared to evaluate data or graphs regarding climate change and identify potential uncertainties
- •Use the correct terminology for the greenhouse effect (e.g., 'radiated from Earth' rather than 'from the Sun')
- •Remember the test for oxygen (glowing splint relights)
- •Always link the physical property directly to the type of bonding and structure present
- •Use the term 'intermolecular forces' only for simple molecular covalent substances, never for ionic or giant covalent structures
- •When describing electrical conductivity, specify the state of the substance (solid, molten, or aqueous)
- •Be prepared to draw or interpret dot and cross diagrams for simple molecules
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