Exploring the Particle Model of Matter
Science
Year 7
14 questions
~28 mins
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A worksheet covering Particle Model of Matter for Year 7 students.
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Exploring the Particle Model of Matter
Subject: ScienceGrade: Year 7
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Untitled Worksheet
Grade Year 7
A
Questions
Answer all questions. Show your working where appropriate.
1.
In the particle model, what are the particles doing in a solid?
[1 mark]AMoving freely
BVibrating in fixed positions
CExpanding and contracting
DOrbiting each other
2.
True or False: Particles in a gas have no fixed shape and are far apart.
[1 mark]3.
Define the term 'diffusion'.
[2 marks]4.
Order the following processes in the correct sequence: condensation, melting, evaporation.
[3 marks]1
2
3
4
5
5.
How does the particle model explain why a gas takes the shape of its container?
[2 marks]6.
Match the following terms to their definitions:
[3 marks]1. Solid
2. Liquid
3. Gas
AState of matter with a definite shape and volume.
BState of matter with no definite shape or volume.
CState of matter with a definite volume but no definite shape.
7.
Calculate the density of an object with mass 600g and volume 200cm³. Use the formula: Density = Mass ÷ Volume.
[3 marks]8.
True or False: In a liquid, particles are tightly packed in a fixed arrangement.
[1 mark]9.
Explain how the particle model accounts for the compressibility of gases.
[6 marks]10.
Fill in the blank: The process of changing from a liquid to a gas is called ___.
[1 mark]11.
Describe the arrangement and movement of particles in a liquid.
[2 marks]12.
Multiple choice question: Which of the following is true about the particles in a solid?
[1 mark]AThey move freely in all directions.
BThey vibrate in fixed positions.
CThey are far apart with no fixed arrangement.
DThey are arranged in layers that slide past each other.
13.
What is the key difference between the particle arrangement in a solid and a liquid?
[2 marks]14.
Multiple choice question: Which change of state involves particles gaining energy and moving further apart?
[1 mark]AFreezing
BMelting
CCondensing
DSubliming
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- Created
- 12/30/2025
- Updated
- 12/30/2025
- Type
- worksheet