States of Matter Knowledge Overview

Solids are dense, cannot flow, and cannot be compressed. Liquids are dense, can flow, but cannot be compressed. Gases are not dense, can flow, and can be compressed.

The particle model is used to explain the properties of solids, liquids, and gases and changes of state. Scientists use it to understand the behavior and characteristics of different states of matter.

In solids, the particles have very strong forces of attraction. In liquids, the forces of attraction are fairly strong, and in gases, the forces of attraction are weak.

<p>In solids, particles are closely packed with a regular arrangement and vibrate in a fixed position. In liquids, particles are closely packed but arranged randomly and move in random directions. In gases, particles spread out to fill their container, are arranged randomly, and move quickly in straight lines in random directions.</p> Signup and view all the answers

<p>Fluids are substances that can flow. Gases and liquids are both examples of fluids because they can flow and take the shape of their container.</p> Signup and view all the answers