As a metal such as lead is heated past its melting point, what happens to the average kinetic energy of the atoms

The kinetic energy increases

Explanation:

As a metal such as lead is heated past its melting point, the average kinetic energy of the atoms increases.

When temperature is increased the kinetic energy of the atoms increase which also increases the random movement of the atoms.

When such happens the distance between the atoms is usually decreased which leads to the elastic collision that occurs.

the transfer of heat by electromagnetic radiation is called thermal radiation . it is usually carried out by electromagnetic waves in an energy range just below the visible spectrum, which is the infrared range.

so the answer would be radiation.

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