Atoms and Molecules
- History of the Atom
- Models for the Atom
- Subatomic Particles
- Periodic Table
- Periodic Trends
- Polyatomic Ions
Guest is currently logged in.
Combined Gas Law
|Gases - Gas Laws|
AAAS Project 2061 Benchmarks: 9B-H2a-Symbolic Relationships
AAAS Project 2061 Benchmarks: 9B-H2b-Symbolic Relationships
Study the primary definition of this concept, broken into general, basic, and advanced English definitions. Also see the mathematical definition and any requisite background information, such as conditions or previous definitions.
Pressure, volume, and temperature are all related. This is a combination of Boyle's Law, Charles' Law, and Gay-Lussac's Law.
In a sealed container, changing two of the variables--pressure, temperature, or volume--will change the third according to the formula in Mathematical Definition.
An "ideal gas" is a gas in which:
- All collisions are totally elastic (particles always bounce off each other)
- There are no intermolecular attractions (a particle can only change direction when it collides with another particle)
- The molecule is infinitely small (particles will come all the way together before they collide)
What does this mean? An ideal gas is a collection of super-small bouncy-balls that never stop bouncing.
Real World Application
Discover processes or disciplines in the natural or man-made worlds that employ the concept.
These depend on the Combined Gas Law:
- Car (combustion) engines
- Projectiles (guns, cannons)
For more on how each one depends on gas laws, see the individual gas law pages.
Experience computer simulators or animations that illustrate the concept discussed here. Many simulators or animations come with worksheets for use in class.
Read a summary of the concept, indicating the enduring understanding students should retain after class.
Changing two of the three variables--pressure, temperature, or volume--has an effect on the third which can be explained and predicted by combining other gas laws.