What We Will Cover in the Chapter

Last updated at July 13, 2026 by

All matter is made of tiny particles, and their spacing and motion decide whether something is a solid, liquid, or gas.

Understanding the Name of the Chapter

Particulate
Made up of tiny particles, too small to see.
Nature
The basic make-up of a thing — what it is really built from.
Matter
Anything that has weight and takes up space.
What does the name of this chapter tell us?
  • All matter is built from tiny particles.
  • These particles are far too small to see.
  • How they are packed and how they move decides the state.
  • So one idea explains solids, liquids, and gases.

Topics We Will Study in This Chapter

Topics We Will Study
Intro Introduction 7.1 What Is Matter Composed of?
7.2 What Decides Different States of Matter?
7.2.1 Solid state 7.2.2 Liquid state 7.2.3 Gaseous state
7.3 How Does the Interparticle Spacing Differ in the Three States of Matter? 7.4 How Particles Move in Different States of Matter?
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