Diffusion Original Scenario-Based Practice

Questions

1. 1.

   In an airtight research habitat on a distant ocean world, botanist Lyra releases a puff of vaporized floral mist at one end of a long, completely draft-free observation hall. Without any ventilation fans running, the distinctive floral scent gradually spreads across the entire hall until sensors at the opposite end detect it. When the experiment is repeated after cooling the hall by twenty degrees, the sensors take significantly longer to register the presence of the mist. Based on the particle model of matter, which explanation best accounts for the mist spreading and the difference in detection time?

   • A) The mist particles are actively repelled away from their initial dense cluster by repulsive forces that weaken at lower temperatures.
   • B) Air currents are automatically generated as particles travel in coordinated straight lines toward empty space, slowing down when air density drops.
   • C) The mist particles undergo spontaneous expansion into continuous waves that take longer to bridge the corridor in chilly conditions.
   • D) Constant random thermal motion and collisions cause the particles to disperse from higher to lower concentration, occurring more slowly at lower temperatures due to reduced kinetic energy.

Answers and step-by-step solutions appear after you finish the test.