In general, what happens to the density of a fluid as it becomes hotter?

1 Answer
Nov 1, 2016

Answer:

The fluid should tend to become less dense upon warming.

Explanation:

Liquids are held together by solvent-solvent interactions. On heating, there is more energy available to overcome these interactions, and reasonably the liquid should become marginally less dense.

Look at the density of liquid water at various temperatures, see this site. Is this consistent with what I have said?