Diffusion Original Scenario-Based Download PDF

Questions

1. 1.

   During a quiet night watch inside the bio-domes of a lunar outpost, Botanist Aaron ruptures a micro-capsule of spiced nectar mist at one end of a sealed, draft-free test bay maintained at 15 °C. When he repeats the identical release in the same chamber after warming it to 35 °C, the olfactory sensors along the opposite wall detect the fragrance significantly sooner. According to the particle model of matter, which statement correctly explains why the nectar mist diffused more rapidly at 35 °C?

   • A) Mist particles absorb thermal energy and expand in volume, physically pushing stationary air molecules aside to clear a path across the chamber.
   • B) Mist and air particles possess higher average kinetic energy and move more rapidly, spreading from the region of higher concentration to lower concentration at a greater rate.
   • C) Rising temperature generates a strong electrostatic repulsion between the mist particles, actively propelling them along straight lines toward the sensors.
   • D) Warmer air particles settle completely onto the floor, creating an unhindered vacuum in the upper room through which the mist travels without collisions.