The Nature of Gases Flashcard

kinetic energy
the energy an object has because of its motion
kinetic theory
a theory explaining the states of matter, based on the concept that all matter consists of tiny particles that are in constant motion
gas pressure
results from the force exerted by a gas per unit surface area of an object; due to collisions of gas particles with the object
vacuum
a space where no particles of matter exist
atmospheric pressure
the pressure exerted by atoms and molecules in the atmosphere surrounding earth, resulting from collisions of these particles with objects
barometer
an instrument used to measure atmospheric pressure
pascal
the SI unit of pressure
standard atmosphere
a unit of pressure; it is the pressure required to support 760 mm Hg in a mercury barometer at 25 degrees Celsius
1 atm is equal to
101.3 kPa or 760 mmHG
kinetic refers to…
motion
the particles in gases are usually…
molecules or atoms
the particles in gas are relatively what compared to liquids and solids?
far apart
there is a lot of what between gas particles?
empty space
there is no what between gas particles?
attraction or repulsion
are hard spheres with insignificant volume
gas particles
the motion of gas particles is…
random, rapid, and constant
gases with fill a container regardless of…
volume or shape
how far can a gas expand?
without limit
gas particle will travel in a straight line until
they collide with something
an elastic collision
kinetic energy is exchnaged without loss
occurs in all gas particle collisions
elastic collision
what causes a balloon’s shape?
gas particles creating pressure by colliding with the inside of the balloon
as elevation increases…pressure…
decreases
1 kPa is equal to how many Pa?
1000
Kelvin temperature is what to kinetic energy?
directly proportional
rasing kinetic energy raises the what?
heat and pressure
no kineticc energy when…
0 K or absolute zero

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