Intermolecular forces as a whole are also known as

van der waals forces

Explanation:

In physics, chemistry, and biology, intermolecular forces are forces that act between stable molecules or between functional groups of macromolecules. Sometimes they are referred to as Van der Waals forces, although some texts apply the latter term to a specific subset of intermolecular forces.

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while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.