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Definition
| What energy does an object have b/c of its motion? |
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Term
| Temperature, pressure, volume |
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Definition
| What does gas behavior depend on? |
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Term
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Definition
| Particles are spaced far apart with no attraction between molecules, particles move rapidly in straight lines,perfectly elastic collisions, KE remains constant |
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Term
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Definition
| What is equal to a measurement of the avg. KE of the molecules? |
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Term
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Definition
| An increase in the ____ of a substance signifies an increse in the average K.E. of the particles of a substance. |
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Term
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Definition
Temperature at which molecular motion ceases.
-273 Celsius or 0 calvin |
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Term
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Definition
| When heat was removed a vaccum was created in the flask. Water from beaker rushes into the flask to balance pressure inside & outside the flask. Gas forced out of flask from being heated. |
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Term
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Definition
| Force exerted by moving particles |
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Term
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Definition
| hits by billions of gas particles and measured by a manometer |
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Definition
| collision by billions of air particles and measured by a barometer. SI unit is a Pascal. |
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Term
| 101.3 kPa, 760 mmHg, 760 Torr |
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Definition
| 1.0 atm at sea level equals |
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Term
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Definition
| Equal volume of gases at the same temperature and pressure will contain equal number of particles. |
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Term
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Definition
| volume occupied by a gas is mostly ___. |
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Definition
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Definition
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Term
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Definition
| Have definite volume due to weak attractive forces between molecules. |
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Term
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Definition
| fluidity can flow in any direction usually downhill due to gravity |
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Term
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Definition
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Term
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Definition
| Density-1000x's denser than a gas |
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Term
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Definition
| At 4 degrees Celsius H20 density is ____. |
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Term
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Definition
| object attracted to itself. |
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Term
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Definition
| The paper clip was able to float to the top due to _____. |
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Term
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Definition
| molecules with most ____ ____ break the surface. |
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Term
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Definition
| vaporization of an uncontained liquid (puddle) |
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Term
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Definition
| change from a liquid to a vapor, below boiling point. |
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Term
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Definition
| evaporation equals condensation |
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Term
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Definition
| pressure exerted by dissolved gases |
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Term
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Definition
| when atmospheric pressure equals vapor pressure |
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Term
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Definition
| In the yringe, the water boiled b/c no atm. pressure above the water, keeps the dissolved gases in the water. Vaccum was created. |
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Term
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Definition
| ____ is a cooling process. |
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Term
| Boling is a cooling process |
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Definition
| High kinetic energy molecules leave the surface and the cool ones remains. |
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Term
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Definition
| When a phase change occurs, the temperature remains _____. (solid to liquid) |
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Term
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Definition
| energy changes as a substance melts (solid to liquid) |
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Term
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Definition
| going from a liquid to a solid |
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Term
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Definition
| melting point = freezing point |
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Term
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Definition
| Crystalline in structure, 7 diff. shapes, repeating patterns (3-d) |
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Term
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Definition
| smallest # of molecules that gives shape of crystal. |
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Term
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Definition
| no regular repeating pattern,random. "Supper cooled liquids" EX)glass,plastic,rubber |
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Term
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Definition
| absorbs moisture from air |
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Term
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Definition
| absorbs moisture and turns into a liquid |
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Term
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Definition
| Atm. pressure ____ w/ an increase in elevation |
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Term
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Definition
| Whenever we have equal volumes of gases at the same temperature and pressure, the volume must contain ____. |
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Term
| Heat is energy transferred and temperature is the avg. KE of particles |
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Definition
| What is the difference between heat and temperature? |
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Term
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Definition
| point at which all 3 states coexist |
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Term
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Definition
| solid to a vapor w/o passing through the liquid phase |
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Term
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Definition
| temp. at whcih know amount of pressure can change the vapor into a liquid. |
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Term
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Definition
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Term
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Definition
| changing from a vapor to a liquid |
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Term
| characteristics of a solid |
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Definition
| particles appear to vibrate about moving points, definite shape, definite volume |
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Term
| characteristics of a liquid |
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Definition
| vibrate about moving points, assumes shape of its container, defintie volume |
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Term
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Definition
| particles are far apart and moving rapidly |
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Term
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Definition
| vapor pressure of a solid and liquid are equal |
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Term
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Definition
| temperature equal to the melting of a pure substance |
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Term
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Definition
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Term
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Definition
| vapor and liquid states can exist in an equilibrium. |
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Term
| Volume becomes less dense |
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Definition
| What happens to volume as water temp. goes from 4 to 0 degrees celsius and freezes. 4 degree C - highest density of water |
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Term
| Thermel energy goes into breaking bonds instead of increasing the K.E. of the molecules |
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Definition
| Why does the temp. remain constant during a phase change? |
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Term
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Definition
| When melting and freezing proceed at the same rate it is, |
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Term
| absorbs heat energy from its surroundings |
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Definition
| Whenever a liquid changes to a vapor, it |
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