The table describes the arrangement and motion of particles in five materials at room temperature. Material Arrangement Motion P regular, closely packed vib...
Question 1 Report
The table describes the arrangement and motion of particles in five materials at room temperature.
| Material | Arrangement | Motion |
|---|---|---|
| P | regular, closely packed | vibrate in fixed positions |
| Q | irregular, close together | slide over each other |
| R | random, widely spaced | move fast in all directions |
| S | irregular, close together | slide over each other |
| T | regular, closely packed | vibrate in fixed positions |
Which two materials are most likely both liquids?
Answer Details
In the kinetic particle model, the three states of matter are distinguished by particle arrangement and motion. Solids have particles in a regular, closely packed arrangement, vibrating in fixed positions. Liquids have particles that are irregularly arranged, close together, and able to slide over each other. Gases have particles that are randomly distributed, widely spaced, and moving rapidly in all directions.
Looking at the table, materials P and T both have regular, closely packed particles vibrating in fixed positions - these are solids. Material R has randomly spaced particles moving fast in all directions - this is a gas. Materials Q and S both have irregular, close-together particles that slide over each other - this matches the liquid state exactly.
Therefore the two materials that are both liquids are Q and S.
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