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Which of these statements are characteristic of matter in the gaseous state?A. Gases fill their containers completelyB. Gases exert pressureC. Gases have massD. The pressure of a gas is independent of its temperatureE. Gases are compressibleF. The distances between particles in a gas are relatively large

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Answer:

All but D are true characteristics of matter in gaseous state:

  • A. Gases fill their containers completely
  • B. Gases exert pressure
  • C. Gases have mass
  • E. Gases are compressible
  • F. The distances between particles in a gas are relatively large

Step-by-step explanation:

Matter reaches the gaseous state when the particles (atoms or molecules) overcome the attractive forces that keep them close to each other.

While solids and liquids retain a considerable intermolecular force that keep the molecules together and have a definite volume, gas particles are very apart of each other, meaning that they move freely and occupy the entire space of their containers. Thus, you conclude that the choice A, Gases flill their containers, is true.

As consequence of the lack of intermolecular forces, the gas particles move fast and collide both with other particles and with the walls of the container. As consequence of the many, many collisions of many, many particles with the walls, a net force is exerted over such walls, which results in the pressure. Thus, you conclude that the choice B, Gases exert pressure, is true.

All matter has mass, so choice C, Gases have mass, is also true.

Choice D, the pressure of a gas is independent of its temperature, is false: the higher the temperature, the greater the kinetic energy of the particles, the larger the number of collisions, and the larger the pressure exerted by the gas.

Choice E, Gases are compressible, is a consequence of the feature stated in choice F, The distances between particles in gas are relatively large. That the distances in a gas are relatively large was stated initially, when it was said that once the attractive forces that keep the particles togethe are ovecomer, the gas particles will separate and occupy a large volume.

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