The speed of particles in a matter usually increases with a rise in temperature. Which one of the following phenomena is responsible for it?
[amp_mcq option1=”An increase in kinetic energy” option2=”A decrease in kinetic energy” option3=”An increase in decomposition” option4=”A decrease in reaction rate” correct=”option1″]
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UPSC Geoscientist – 2022
– As temperature increases, the particles absorb thermal energy, which is converted into kinetic energy.
– Increased kinetic energy means the particles move faster and vibrate more vigorously.
– Options C and D relate to chemical reaction rates, which are influenced by the kinetic energy and collisions of particles, but the fundamental reason for increased particle speed with temperature is the increased kinetic energy itself.