| Question | Answer |
| kinetic energy | energy associated with the motion of a particle, KE=.5mv2. (m=mass, v=velocity) |
| Postulates of Kinetic Molecular Theory of Gases | Gases consist of tiny particle. these particles are so small compared to space between them, that volume of particle are negligible. The particles are in constant random motion, collisions cause the pressure. do not attract or repel. average kinetic energy proportional to Kelvin temperature of the gas. |
| kinetic molecular theory | simple model that attempts to explain the behavior of an ideal gas |
| Dalton's law | P total = P1 + P2 + P3 = n total (RT/V) |
| partial pressure | the pressure that the gass woud exert if it were alone in the container |
| combined gas law | P1*V1/T1=P2*V2/T2 |
| ideal gas | gas that obeys PV=nRT, behaves ideally, volume of individual gas particle is not very important, forces among particles is not important |
| evacuate | pull all particles out |
| Ideal gas law | PV=nRT (PIVNERT) |
| universal gas constant | R |
| Avogadro's law | a gas at constant temperature and pressure, the volume is directly proportional to the number of moles of gas (V/n=a) |
| Charles law | dircect proportionality between volume and temperature (in kelvin) is represented by the equation V/T=b |
| inversely proportional | when one increase and the other decreases |
| Boyle's law | k is a constant at a specific temperature for a given amount of gas (PV=k) |
| psi | pounds per square inch used to measure tire pressure (1atm = 14.69 psi) |
| pascal | the SI unit for pressure (1 standart atmosphere = 101,325 Pa) |
| standard atmosphere (atm) | related unit for pressure |
| mm Hg (millimeters of mercury), Torr | height of the mercury column that the gas pressure can support (i standard atmosphere = 760 Torr |
| Atmospheric pressure | Varies in temperature and altitude |
| standard pressure | by Torricelli experiment, at sea level the height of the mercury was 760mm (760mmHg), but not always because temperature can change |
| barometer | device that measures atmospheric pressure (Torricelli) |
21 cards - created aug 3, 12:36pm