Multiple Choice
Which of the following molecules is likely to have the most potential energy?
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8. Thermochemistry
Kinetic & Potential Energy
Multiple Choice
Which sequence correctly shows the potential energy of particles in the following substances, from least to greatest?
A
solid < gas < liquid
B
liquid < solid < gas
C
gas < liquid < solid
D
solid < liquid < gas
Verified step by step guidance1
Understand that potential energy in substances is related to the intermolecular forces and the average distance between particles: the closer the particles, the lower the potential energy because they are more strongly attracted.
Recall that in solids, particles are tightly packed in a fixed structure, so they have the lowest potential energy due to strong intermolecular attractions.
In liquids, particles are close but can move past each other, so their potential energy is higher than solids but lower than gases.
In gases, particles are far apart with minimal intermolecular forces, resulting in the highest potential energy among the three states.
Therefore, the correct sequence from least to greatest potential energy is: solid < liquid < gas.
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