This exam focus covers Exam Focus within Density for GCSE Physics. Revise Density in Particle Model for GCSE Physics with 13 exam-style questions and 30 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 11 of 13 in this topic. Treat this as a marking guide for what examiners are looking for, not just a fact list.
Topic position
Section 11 of 13
Practice
13 questions
Recall
30 flashcards
🎯 Exam Focus
Exam Favourite
Density questions appear in almost every paper. Common formats include:
- Calculation questions (2-3 marks): Given mass and volume, calculate density. Or given density and one other quantity, find the third. Always show units clearly — kg/m³ or g/cm³.
- Required practical questions (3-4 marks): Describe how to measure density of a regular or irregular object. Include: measure mass with balance, find volume (geometry or displacement), calculate ρ = m/V.
- Explain floating/sinking (2 marks): Compare the density of the object to the density of water/fluid. State whether it is greater or less, and the consequence.
- Unit conversion: Examiners sometimes mix kg/m³ and g/cm³. Know that 1 g/cm³ = 1000 kg/m³.