Who is the father of modern chemistry

Explanation:

Antoine Laurent Lavoisier

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A. The average kinetic energy of their particles is the same.

Explanation:

The temperature of an object is proportional to the average kinetic energy of its particles, following the relationship:

E_k = \frac{3}{2}kTEk=23kT

where

E_kEk is the average kinetic energy of the particles

k is the Boltzmann constant

T is the absolute temperature

From this relationship, therefore, we see that the average kinetic energy of the particles in a substance depends only on its temperature: therefore, since the two pieces of iron have same temperature, they also have same average kinetic energy.