Slide 1 of 29
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>The Nature of Gases Kinetic Theory and a Model for Gases
The word kinetic refers to motion.
• The ___________ an object has because of its
________ is called __________ ___________.
• According to the ___________ theory, all
___________ consists of _________ ________
that are in _____________
_____________________.
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Slide 2 of 29
© Copyright Pearson Prentice Hall
>The Nature of Gases Kinetic Theory and a Model for Gases
According to kinetic theory:
• The particles in a gas are considered to be small,
hard spheres with an _______________ volume.
• The motion of the particles in a gas is _______ ,
_________ and __________.
• All collisions between particles in a gas are perfectly
__________.
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Slide 3 of 29
© Copyright Pearson Prentice Hall
>The Nature of Gases Kinetic Theory and a Model for Gases
A. Particles in a gas are in rapid, constant motion.
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B. Gas particles travel in straight-line paths.
C. The gas fills the container.
Slide 4 of 29
© Copyright Pearson Prentice Hall
>The Nature of Gases Gas Pressure
Gas _____________ results from the force
exerted by a gas per unit surface area of an object.
• An empty space with no particles and no pressure is
called a _____________.
• _______________ pressure results from the
collisions of atoms and molecules in air with objects.
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© Copyright Pearson Prentice Hall
Slide 5 of 29
>The Nature of Gases Gas Pressure
Gas pressure is the result of
simultaneous ______________ of
billions of rapidly moving particles in
a gas with an __________.
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Slide 6 of 29
© Copyright Pearson Prentice Hall
>The Nature of Gases Gas Pressure
A _____________ is a device that is used to measure atmospheric pressure.
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Slide 7 of 29
© Copyright Pearson Prentice Hall
>The Nature of Gases Gas Pressure
• The SI unit of pressure is the _____________ (Pa).
• One standard atmosphere (atm) is the
pressure required to support _______ mm of
mercury in a mercury barometer at 25°C.
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Slide 9 of 29
© Copyright Pearson Prentice Hall
>The Nature of Gases Kinetic Energy and Temperature
Average Kinetic Energy
The particles in any collection of atoms or
molecules at a given temperature have a
________ ___________ of kinetic energies.
Most of the particles have kinetic energies
somewhere in the ___________ of this range.
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Slide 10 of 29
© Copyright Pearson Prentice Hall
>The Nature of Gases Kinetic Energy and Temperature13.1
Slide 11 of 29
© Copyright Pearson Prentice Hall
>The Nature of Gases Kinetic Energy and Temperature
_________ _____________ (0 K, or –273.15°C) is the temperature at which the motion of particles theoretically ceases.
• Particles would have ___ kinetic energy at absolute zero.
• Absolute zero has ___________ been produced in the laboratory.
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