The Compressibility Factor
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
The compressibility factor is the ratio of a gas's actual molar volume to its ideal-gas-predicted molar volume at the same conditions.
Show
A factor of exactly 1 signals ideal behavior; values above or below 1 signal real-gas deviation.
Watch for
A factor below 1 means attraction dominates, shrinking the gas below ideal volume; above 1 means molecular volume dominates instead.