Chapter 9: Gasses Flashcards
What are the 5 gasses that Air is made up of?
N2
O2
CO2
H2O
Ar
The force per unit area exerted against a surface by the weight of the air above that surface
Atmospheric Pressure
What 3 variables effects Atmospheric Pressure?
Weather
Elevation
Temperature
Evangelista Torricelli invented what in 1643?
The Barometer
Who invented the Barometer in 1643?
Evangelista Torricelli
What is the Standard Atmospheric Pressure at sea level?
760mm Hg
What is a Barometer?
A tube filled with Hg and inverted in a dish of Hg used for measuring Atmospheric Pressure
The volume of a fixed amount of gas at constant temperature is inversely proportional with the _______________.
Pressure
Kinetic Molecular Theory of Gasses
Gasses consist of __________.
Tiny Particles
Kinetic Molecular Theory of Gasses
The particles are so small, compared to the distance between them that the ___________ of the individual particles can be assumed to be _____________.
- Volume
- Negligible
Kinetic Molecular Theory of Gasses
The particles are in constant _____________, colliding with the walls of the container. These collisions with the walls cause the _______________ exerted by the gas.
- Random motion
- Pressure
Kinetic Molecular Theory of Gasses
The particles are assumed not to ____________________________
Attract or repel each other.
Kinetic Molecular Theory of Gasses
The average kinetic energy of the gas particles is directly proportional to the ________________ of the gas.
Kelvin temperature.
Implications of the Kinetic Molecular Theory:
Kelvin temperature is directly proportional to the average __________________ of the gas particles.
Kinetic Energy
Implications of the Kinetic Molecular Theory:
Gas pressure increases as the ___________________ increases and the particles speed up.
Temperature
_________________ of a gas increases with temperature because the particles speed up.
Volume.
