Diffusion Transitional Reasoning Download PDF

Questions

1. 1.

   A student investigated diffusion by adding an identical drop of blue food coloring to two identical beakers, X and Y, each containing 200 mL of unstirred water. Beaker X was maintained at 15 °C, while Beaker Y was maintained at 50 °C. Based on the particle model of matter, which statement correctly predicts and explains the outcome of this experiment?

   • A) The dye spreads faster in Beaker X because the closely packed water particles create stronger intermolecular attractions that pull the dye molecules through the liquid.
   • B) The dye spreads faster in Beaker Y because higher thermal energy increases particle speed, leading to more frequent collisions and faster dispersion.
   • C) The dye spreads at the same rate in both beakers because diffusion depends entirely on the initial concentration difference between the dye drop and the water.
   • D) The dye spreads faster in Beaker X because cold water particles remain stationary, allowing the dye particles to move through unobstructed gaps.