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Chapter 4: Problem 5

Why can gases be compressed much more readily than solids or liquids?

Short Answer

Expert verified
Answer: Gases can be compressed more easily than solids or liquids due to their widely separated particles, weak intermolecular forces, and high kinetic energy. This allows for a large amount of empty space between particles in gases, making it easy for them to be compressed. In contrast, the strong intermolecular forces and limited free space in solids and liquids make them more resistant to compression.

Step by step solution

01

Understand particle arrangement in solids, liquids, and gases

In solids, particles are tightly packed in an organized manner, with very little space between them. In liquids, particles are randomly arranged but still relatively close to each other. In gases, particles are widely separated, with much more space between them compared to solids and liquids.
02

Discuss intermolecular forces

Intermolecular forces are the forces between the particles of matter. In solids, these forces are strong and hold the particles tightly together, making it difficult to compress. In liquids, the intermolecular forces are weaker than in solids, allowing for some movement among particles but still maintaining a relatively incompressible state. In gases, the intermolecular forces are the weakest among the three states, and the particles are free to move around, making it much easier to compress gases.
03

Explain kinetic energy and particle movement

Kinetic energy is the energy possessed by particles in motion. In solids, particles vibrate around fixed positions and have the least kinetic energy. In liquids, particles have more kinetic energy, allowing them to slide past each other. In gases, particles possess the highest kinetic energy and move independently and rapidly in all directions. This high level of kinetic energy means that gases can be easily compressed, as the particles can be pushed closer together.
04

Combine the factors to explain compressibility

Gases can be compressed much more readily than solids or liquids because particles in gases are widely separated with weak intermolecular forces and high kinetic energy. The large amount of empty space between particles in gases, combined with their high kinetic energy and weak intermolecular forces, allows for easy compression. In contrast, the strong intermolecular forces and limited free space in solids and liquids make them much more resistant to compression.

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