GAS AND GAS LAWS Flashcards
Gases _____ to fill any container.
EXPAND
Gases have very ____ densities.
LOW
Gases can be _____.
COMPRESSED
Gases undergo ____ & _____.
DIFFUSION AND EFFUSION
Particles of gases are constant, random, and straight-line motion.
Molecules of a gas are separated by great distances which makes the gas mostly empty space.
Molecules collide with one another and with the walls of their container.
Each molecule acts independently of all the others.
Individual molecules upon collision may or may not gain energy.
Kinetic Molecular Theory of Gases
is the force exerted by air upon a given volume of matter
ATMOSPHERIC PRESSURE
ATMOSPHERIC PRESSURE IS MEASURED BY
BAROMETER OR MANOMETER
BASTA TAO SA ATMOSPHERIC PRESSURE
EVANGELISTA TORRICELLI
The pressure and volume of a gas are INVERSELY RELATED at constant temperature.
“At constant temperature, the volume of a confined gas is INVERSELY PROPORTIONAL to pressure
BOYLE’S LAW
PROPONENT NG BOYLE’S LAW
ROBERT BOYLE
The volume and absolute temperature (K) of a gas are DIRECTLY RELATED at pressure.
“The volume of a confined glass is DIRECTLY PROPORTIONAL to the temperature when pressure is held constant”.
CHARLE’S LAW
PROPONENT NG CHARLE’S LAW
Jacques Alexandre Cesar Charles
The pressure and absolute temperature (K) of a gas are directly related at constant volume.
“The pressure of a confined glass is directly proportional to the temperature when volume is held constant”.
GAY-LUSSAC’S LAW
DIFFUSION
GRAHAM’S LAW OF DIFFUSION
THREE GAS LAWS COMBINED
COMBINED GAS LAW
PROPONENT NG AVOGADRO’S LAW
AMADEO AVOGADRO
1 mol gas = 22.414 L at STP
AVOGADRO’S LAW
Shows the relationship among volume, pressure, temperature and number of moles of a gas
IDEAL GAS LAW
GAS STOICHIOMETRY
- Volume to volume
- Volume to mass
- Mass to volume
It states that for a given sample of gas at a constant temperature, its pressure is dependent upon the number of impacts made by the gaseous molecules per unit of time, or stated in another way, the volume of a confined gas is inversely proportional to the pressure at a constant temperature. This means that volume decreases with an increase in pressure, and increases when the pressure decreases.
BOYLE’S LAW
are the most thoroughly studied phase of matter
GASES
the study of gases requires a concept known as the
STANDARD CONDITIONS OR STP
The equations that express the relationships among P, V, T, and the number of moles (n), are known as the
GAS LAWS
TEMPERATURE IS CONSTANT
BOYLE’S LAW
It states that for a given sample of gas, the volume is directly proportional to absolute temperature. An increase in temperature causes the molecules to move faster and strike the walls of the container more forcefully.
CHARLE’S LAW
CONSTANT PRESSURE
CHARLE’S LAW
This is Boyle’s Law and Charles’ Law combined in an equation.
COMBINED GAS LAW
states the equal volumes of gases, at the same temperature and pressure, have the same number of molecules. Hence, 1 liter of CO2 will contain the same number of molecules as 1 liter of NH3. For a given mass of an ideal gas, the volume is directly proportional to the number of moles (n), at constant pressure and temperature.
AVOGADRO’S LAW
may be derived in a similar manner as the Combined Gas Law, using Avogadro’s Law, Boyle’s Law and Charles’ Law. An ideal gas is a hypothetical gas whose volume, temperature, and pressure behavior are described by the _______.
IDEAL GAS EQUATION
