# NCERT Class 8 Science Chapter 7 Particulate Nature of Matter Solutions: In-Text and Exercise Questions Explained | SwaVid

This document provides questions and step-by-step solutions for Chapter 7, "Particulate Nature of Matter," from the new rationalised NCERT Class 8 Scien...

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# Particulate Nature of Matter

## Find the gaps before this chapter finds them for you.

## Related chapters

Chapter 7 · Class 8 Science

This document provides questions and step-by-step solutions for Chapter 7, "Particulate Nature of Matter," from the new rationalised NCERT Class 8 Science textbook, "Curiosity." The questions include both in-text questions and end-of-chapter exercises, transcribed directly from the textbook as found in reliable online sources. The solutions are designed to be clear and easy for a Class 8 student to follow.

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In-text Questions

Answer: Every speck of this fine chalk powder is still composed of the same substance. Breaking or grinding chalk is a physical change, which only alters the size of the particles, not their chemical composition.

Keep the Curiosity Alive (End-of-Chapter Exercise, Pages 113-114)

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Source

- Identify the nature of the change: Breaking or grinding chalk is a physical change.
- Recall properties of physical changes: In a physical change, the substance's chemical composition does not alter; only its physical form (like size or shape) changes.
- Apply to chalk: Each tiny particle of chalk powder is still chalk, chemically identical to the original piece of chalk.
- NCERT Class 8 Science textbook: Curiosity : Chapter 7: Particulate Nature of Matter

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