Practice Particle Theory in Chemistry

Use these practice problems to test your method after reviewing the concept explanation and worked examples.

Quick Recap

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.

Everything is made of tiny particles that are always moving. How fast they move and how tightly they're held together explains solids, liquids, and gases.

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 the bottom.

Example 3

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

Example 4

hard
Using particle theory, explain why increasing the temperature of a balloon causes it to expand, and predict what happens if the balloon is placed in a freezer.
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