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The Nature of Gases
Vocab and main ideas- 13.1
27
Chemistry
11th Grade
04/15/2009

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