What this chapter covers
Class 8 Science Chapter 7 'Particulate Nature of Matter' from NCERT Curiosity teaches that matter is made of tiny particles separated by gaps. Students compare the arrangement, spacing and motion of particles in solids, liquids and gases, and use this particle model to explain changes of state (melting, evaporation, condensation), diffusion, expansion on heating and compressibility of gases.
Key topics in this chapter
- Matter as particles with gaps
- Solids, liquids, gases — arrangement and motion
- Changes of state and the particle model
- Diffusion and evaporation
- Compressibility and expansion
Sample questions from this chapter
Here are 6 real questions students will encounter when they generate a worksheet for this chapter. Every question includes the answer.
MCQ
Medium
1 mark
When ice melts to water, the change is from:
(a) Liquid to solid
(b) Gas to liquid
(c) Solid to liquid
(d) Liquid to gas
Answer: Solid to liquid
Short Answer
Medium
3 marks
Differentiate between the three states of matter based on shape and volume.
Answer: • Solid: fixed shape and fixed volume.
• Liquid: fixed volume, no fixed shape (takes the shape of its container).
• Gas: no fixed shape and no fixed volume.
Fill in the Blank
Medium
1 mark
Interparticle attractions are __________ in gases.
Answer: negligible
Very Short
Medium
1 mark
What gives a solid its fixed shape and volume?
Answer: Strong interparticle attractions, minimum interparticle spacing and no free movement of particles.
True / False
Medium
1 mark
State True or False: Melting involves an INCREASE in interparticle attractions during the transformation.
Answer: False. Melting involves a DECREASE in interparticle attractions, because particles move further apart.
Long Answer
Medium
5 marks
Represent diagrammatically the changes in the arrangement of particles as ice melts and becomes water vapour.
Answer: • Ice (solid): particles close together, packed in a regular pattern.
• Water (liquid): particles close but irregular, sliding past one another.
• Water vapour (gas): particles far apart, scattered randomly.
• Arrows between the three show 'on heating' progressing from solid → liquid → gas.
Generate a worksheet with all 76 questions →
Frequently asked questions
What is included in Class 8 Science Chapter 7 (Particulate Nature of Matter)?
This chapter has 76 NCERT-aligned practice questions covering all the concepts from the Curiosity textbook's Chapter 7. Questions span easy, medium and hard levels across 9 different formats so students get a balanced practice set.
Are these questions based on the new NCERT Curiosity textbook?
Yes. Every question on Practico for Class 8 Science is mapped directly to the latest NCERT Curiosity textbook (the one CBSE schools are using now). The chapter numbers and chapter titles match the textbook exactly.
How many questions can I practice from this chapter?
76 questions are available right now. You can pick how many you want at a time — generate 10 quick MCQs, a 30-question worksheet, or a full exam-style mix. Each generation gives you a different random set.
Can I download a free PDF worksheet for Particulate Nature of Matter?
Yes — completely free, no sign-up required. Pick this chapter, choose the number of questions and types you want, and download a printable PDF (with or without answers) in one click.
What question types are available?
This chapter has assertion reason, fill blank, image, long, match, mcq, short, true false, very short. You can mix any combination, or filter to just the type you want to practice — for example, only numericals to drill calculation, or only short-answer questions for exam revision.
Is Practico aligned with CBSE exam patterns?
Yes. Practico questions are tagged by marks (1, 2, 3, 5) and by difficulty (Easy/Medium/Hard) just like CBSE exam blueprints, so you can build a worksheet that mirrors a real unit test or annual exam.