Chemistry Exam Chapter 10 and 12 – Flashcards

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question
The Temperature at which the vapor pressure of a liquid is just equal to the external pressure is the ____
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Boiling point
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The temperature at which a solid turns into a liquid is the _____
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Melting Point
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The conversion of a liquid to a gas below the boiling point is _____
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vaporization
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The vaporization of an uncontained liquid is _____
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evaporation
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the term for a change in the physical state of a substance is _____
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phase change
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The pressure resulting from the collision of air molecules with objects is ___
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Atmospheric pressure
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The pressure above a liquid in a sealed container caused by collision of vaporized particles with the walls of the container is ______
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Vapor pressure
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The assertion that the tiny particles in all forms of matter are in constant motion is _____
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Kinetic Theory
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The energy an object has due to its motion is _____
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kinetic energy
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A device used to measure atmospheric pressure is a _____
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barometer
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Which temperarure scale provides a direct measure of the average kinetic energy of a substance?
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Kelvin
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What is the SI unit of pressure
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pascal
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How does the apmospheric pressure at altitudes below sea level compare with atmospheric pressure at sea level?
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The atmospheric pressure below sea level is higher
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Collisions between gas molecules are _____
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elastic
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According to the kinetic theory of gasses ___.
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the particles of a gas move ind. of each other, they move rapidly, and the particles in a gas are far apart
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The temp. at which the motion of particles theoretically ceases is ____
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0 k
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The pressure of a gas in a container is 152 mm Hg. This is equivalent to _____
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0.2 atm
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For a given mass of gas at constant temp. , the volume of the gas varies inversely with pressure is ______
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boyles law
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The volume of a fixed mass of gas is directly proportional to its kelvin temp., if the pressure is kept constant is _____
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Charles law
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The pressure of gas is directly proportional to its kelvin temp if the volume is kept constant is _____
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Gay-Lussac's law
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At constant volume and temp. the total pressure exerted by a mixture of gases is equal to the sum of the partial pressure is _____
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daltons law
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P x V = n x R x T is _____
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ideal gas law
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Why does air leave a tire when the tire valve is opened
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bc the pressure outside the tire is lower than the pressure inside the tire
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If the volume of a container holding a gas is reduced, what will happen to the pressure within the container
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the pressure will increase
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If a balloon is squeezes what happens to the air pressure within the balloon
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it increases
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If a balloon is rubbed vigorously what happens to the pressure of the air inside the balloon if the volume remains conatant
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it increases
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The combined gas law relates to ____ , _____, and _____
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temp, pressure, and volume
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If the atmospheric pressure on mt. everest is one-third the atmospheric pressure at sea level, the partial pressure of oxygen on everest is ____
answer
one-third that at sea level
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