Unit 5 · 8 lessons
Gases & Atmospheric Chemistry
How gases behave under changing pressure, volume, and temperature, and how that behaviour connects to the chemistry of Earth's atmosphere.
- 88 practice questions
- 74 flashcards
- 2 interactive lessons
Lessons
- 1States of Matter & the Kinetic Molecular TheoryThe kinetic molecular theory models gases as particles in constant random motion, and it explains why gases behave so differently from solids and liquids.11 questions
- 2Pressure, Temperature, and the Kelvin ScaleGas pressure has several common units that all convert from one another, and every gas law calculation must use the absolute (Kelvin) temperature scale.11 questions
- 3Boyle's, Charles's, and Gay-Lussac's LawsThree simple gas laws each hold two of pressure, volume, and temperature constant while relating the other two — and each can be explained directly from the kinetic molecular theory.Interactive11 questions
- 4The Combined Gas LawThe combined gas law merges Boyle's, Charles's, and Gay-Lussac's laws into one equation for problems where pressure, volume, and temperature all change at once.11 questions
- 5The Ideal Gas LawThe ideal gas law, , connects pressure, volume, temperature, and amount of gas in a single equation — and reveals where real gases deviate from ideal behaviour.Interactive11 questions
- 6Molar Volume: STP and SATPAt a given standard set of conditions, one mole of any ideal gas occupies the same volume — a shortcut that avoids the full ideal gas law for many conversions.11 questions
- 7Gas StoichiometryStoichiometry problems involving gas volumes use the same mole-ratio road map as any other stoichiometry problem — gas volume is just another quantity to convert to and from moles.11 questions
- 8Atmospheric ChemistryEarth's atmosphere is a mixture of gases whose chemistry drives the greenhouse effect, ozone depletion, acid rain, and smog — all connected to human fossil fuel combustion.11 questions