The particles of the soup has increased kinetic energy and thus move around more randomly, colliding more often with each other. There is also an increase in the temperature of the soup.
When heat is added or removed from substances, it results in an increase or decrease in the temperature of that substance.
Val warms up some soup on the stove, he adds heat energy to the soup particles resulting in a temperature increase.
The increase in temperature occurs because when is added to a substance, the particles of that substance acquire energy in the form of kinetic energy. This increase in kinetic energy of the particles cause them to move faster and collide more often with each other.
Since temperature is a measure of the average kinetic energy of the particles of a substance, the temperature of that substance increases with increase in the kinetic energy of its particles.
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