Question

1. observe: click reset. set the water temperature to 20 °c and the ice volume to 50 cm3. set add/remove heat energy to 0 j/s. click play. how do the molecules in the liquid interact with the molecules in the solid? how do the molecules in the liquid interact with the molecules in the solid? 1 point

○ molecules do not interact
○ molecules collide with the solid
○ none of the above
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Explanation:

In a system with liquid (water) and solid (ice) at the same temperature (when heat transfer is zero, but molecular motion still occurs), liquid molecules are in constant motion and will collide with the solid (ice) molecules. The first option is incorrect as molecules do interact, and the third is incorrect as the second option is valid.

Answer:

B. molecules collide with the solid