Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size Small Size show me how

Normal Size Small Size show me how

# Ch 10 Vocab - Gases

Question | Answer |
---|---|

diffusion | spontaneous mixing of the particles of two substances caused by their random motion. |

effusion | a process by which gas particles pass through a tiny opening. |

elastic collision | a collision between gas particles and container walls in which there are no net loss of kinetic energy. |

fluid | a substance that can flow and therefore take the shape of its container; a liquid or a gas. |

ideal gas | an imaginary gas that perfectly fits all the assumptions of the kinetic-molecular theory. |

kinetic-molecular theory | a theory based on the idea that particles of matter are always in motion. |

real gas | a gas that does not behave completely according to the assumptions of the kinetic-molecular theory. |

atmosphere of pressure (atm) | exactly equivalent to 760 mm Hg. |

barometer | a device used to measure atmospheric pressure. |

millimeter of mercury (mm of Hg) | a common unit of pressure. |

newton | the SI unit for force; the force that will increase the speed of a one kilogram mass by one meter per second it is applied. |

pascal | the pressure exerted by a force of one newton acting on an area of one square meter. |

kilopascal | 1,000 pascals. |

pressure | the force per unit area on a surface. |

standard temperature and pressure (STP) | the agreed-upon standard conditions of exactly 1 atm pressure and 0oC. |

standard ambient temperature and pressure (SATP) | corresponds to 25oC, 1 bar. |

torr | a pressure equal to 1 mm Hg in honor of Torricelli for his invention of the barometer. |

absolute zero | the temperature -273.15oC, given a value of zero in the Kelvin scale. |

Kelvin | equal to 273.15 + oC. |

Boyle’s Law | states that the volume of a fixed mass of gas varies inversely with the pressure at constant temperature. |

Charles’s Law | the volume of a fixed mass of gas at constant pressure varies directly with the Kelvin temperature. |

Combined gas law | the relationship between the pressure, volume, and temperature of a fixed amount of gas. |

Dalton’s Law of partial pressure | the total pressure of a mixture of gases is equal to the sum of the partial pressures of the component gases. |

Gay-Lusscac’s Law | the pressure of a fixed mass of gas at constant volume varies directly with the Kelvin temperature. |

Ideal gas law | the mathematical relationship of pressure, volume, temperature, and the number of moles of gas. |

Partial pressure | the pressure of each gas in a mixture. |

Avogadro’s Law | 6.0221367x1023; the number of particles in exactly one mole of a pure substance. |

van der Waals equation | the equation that relates real gases to the ideal gas. |

bar | 100kPa or 25oC. |

Gas Constant | R equals 0.082 liter-atmospheres per mole-degree. |

Created by:
EKinateder