Particle model of solids, liquids and gases Original Scenario-Based Download PDF

Questions

1. 1.

   Dr. Vane's microscopic probe inspects three sealed pods containing identical molecules under different thermal conditions. In Pod 1, the particles vibrate about fixed positions within an orderly lattice; in Pod 2, the closely packed particles slide smoothly over one another; and in Pod 3, the widely spaced particles move rapidly in random directions. Which statement correctly identifies the state of matter in each pod and accurately describes their macroscopic properties?

   • A) Pod 1 is a liquid that easily changes volume, Pod 2 is a solid with a rigid boundary, and Pod 3 is a gas that maintains a fixed shape.
   • B) Pod 1 is a gas because regular lattices allow high compressibility, Pod 2 is a solid because particles touch, and Pod 3 is a liquid because particles move freely.
   • C) Pod 1 is a solid with a fixed shape, Pod 2 is a liquid that flows to take the shape of its container, and Pod 3 is a gas that expands to fill the entire container volume.
   • D) Pod 1 is a solid that can be easily compressed, Pod 2 is a gas with a definite volume, and Pod 3 is a liquid that expands indefinitely.