23 terms

# Chemistry Chapter 10 Gases

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What cause the pressure to increase?
Is caused by the increase in the number of collisions of molecules of air with the inside walls of the object
Pressure
Is defined as the force per unit area on a surface.
Newton (N)
The SI unit for force, it is the force that will increase the speed of a one-kilogram mass by one meter per second each second that the force is applied.
Barometer
A device used to measure atmospheric pressure.
Manometer
Used to measure the pressure of an enclosed gas sample.
Millimeters of mercury
The common unit of pressure, symbolized mm Hg.
Atmosphere of pressure
Is defined as being exactly equivalent to 760 mm Hg.
Pascal
Defined as the pressure exerted by a force of one newton acting on an area of one square meter.
Partial pressure
The pressure of each gas in a mixture, of that gas.
Dalton's law of partial pressures
states that the total pressure of a gas mixture is the sum of the partial pressures of the component gases.
Boyle's Law
States that the volume of a fixed mass of gas varies inversely with the pressure at constant temperature. PV=PV
Absolute zero
The temperature -273.15C is given a value of zero in the Kelvin scale.
Charles's law
States that the volume of a fixed mass of gas at constant pressure varies directly with the Kelvin temperature. V/T=V/T
Gay-Lussac's law
The pressure of a fixed mass of gas at constant volume varies directly with the Kelvin temperature P/T=P/T
Combined gas law
expresses the relationship between pressure, volume, and temperature of a fixed amount of gas. PV/T=PV/T
Gay-Lussac's law of combining volumes of gases
at constant temperature and pressure, the volumes of gaseous reactants and products can be expressed as ratios of small whole number.