Somebody probably beat me to it , (I haven't read all my mail yet) but the
density of water does vary with temperature. At around 55 deg F it becomes
slightly more dense.  ...And at 32 deg F it becomes very dense. :-))

Brad
>
> I'm not as positive about temperature, but I'll go out on a limb, just for
> the sake of argument.  As long as water is in its liquid form, the density
> doesn't change with temperature either.  I'm willing to bet that a sealed
> glass jar, completely filled with water and sealed at room temperature,
will
> not break if placed in a pot of boiling water.  Want to bet the cost of a
> bottle of your favorite brew against a bottle of mine?  I'd like to keep
it
> friendly and can't think of a better way.
>
> Lee