Particle Theory Chemistry Example 3

Follow the full solution, then compare it with the other examples linked below.

Example 3

medium
Use particle theory to explain why you can smell perfume from across a room.

Solution

  1. 1
    Perfume particles evaporate and enter the gas phase, where they move rapidly in random directions (diffusion).
  2. 2
    The gas particles have large spaces between them, allowing perfume molecules to travel through the air and eventually reach your nose.

Answer

Diffusion: perfume particles spread through air due to random motion.\text{Diffusion: perfume particles spread through air due to random motion.}
Diffusion is a direct consequence of the constant random motion described by particle theory. Gas particles move at hundreds of meters per second but collide frequently with air molecules, creating a zigzag path that slows the overall spread.

About Particle Theory

A scientific model stating that all matter is composed of tiny particles (atoms, molecules, or ions) that are in constant motion, with the degree of.

Learn more about Particle Theory →

More Particle Theory Examples

Example 1 easy

State the four main points of the particle theory of matter.

Example 2 medium

Use the particle theory to explain why a gas fills its entire container, while a liquid settles to t

Example 4 hard

Using particle theory, explain why increasing the temperature of a balloon causes it to expand, and

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