Edexcel IGCSE Physics 5.10P Particle arrangement & motion
Practise drawing and comparing particle arrangements and motion in solids, liquids and gases from diagrams and written prompts.
- Syllabus
- First assessment 2019
- Course
- Physics 4PH1
Exam points
- draw solid, liquid or gas particle diagrams showing spacing, regularity and contact
- compare solid and liquid particles using regular arrangement, close packing and movement
- describe gas particles as widely spaced, randomly arranged and moving quickly at random
5.10P Particle arrangement and motion question 1
[Maximum number: 2]
This question is about sound waves.
The speed of sound in liquids is greater than the speed of sound in gases.
Describe the arrangement of particles in liquids and in gases.
You may use diagrams to help your answer.
- particles arranged randomly
- particles further apart in gas than in liquid
Accept:
- either mark if clear from diagrams
- irregularly for randomly
- random arrangement for liquid, gas, or both
- reverse argument
Ignore:
- diagram for the distance mark if gaps in liquid are bigger than one particle
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