Chemistry Exam Chapter 10 and 12 – Flashcards
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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 ____ |
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one-third that at sea level |