Charles's Law


For a gas, temperature and volume are directly proportional.  Keeping everything else constant, as the temperature of a gas goes up, its volume goes up.  As the temperature of a gas goes down, its volume goes down.

Charles’s Law says that for a given amount of gas, at fixed pressure, volume and temperature are directly proportional.

You can write this mathematically as

V ∝ T  or V = kT, where k is a proportionality constant

This video includes two example problems worked in full. If you need more practice for a test, we have a Gas Laws Practice Test available for purchase.

Video: Charles’s Law

Handout: Video Notes Worksheet

Join Socratica’s Chemistry Club for free updates to this course.

Full-length Practice Tests with Answer Keys