Re: Ice Spires.

[brian whatcott <inet@INTELLISYS.NET>]

I finally reined in the relevant tables:
Relative Density & Volume of Water    p2114, 40th Ed (Ref 1)
 Ditto                                p1789, 32nd Ed (Ref 1)

...to see with Bob that liquid water continues to expand as
 temperature drops below zero degC , while solid water apparently
contracts as temperature drops, according to ref 2 which gives
 a linear expansivity for water ice of  50.7 parts per
million (I suspect it is this latter datum that might specially
interest John Locke)
 This second reference notes temp of maximal density for heavy
water is 11.6 degC

Ref 1 HCP Chemical Rubber Publishing
Ref 2 Physical & Math Tables, Yarwood & Castle, Macmillan

Brian


> At 01:25 1/30/00 -0500, Herbert H Gottlieb wrote:
> > According to the Handbook of Chemistry and Phyiscs (Page F5)
> > water is densest at a temperature of 4 C. It not only expands when
> > heated above this temperature but it also expands CONTINUOUSLY
> > as it is cooled to  FROM +4 TO -20 C.
> >
> > Could this help explain the pressure changes that do (or do not)
> > occur within an ice cube as the liquid interior crystallizes??
> >
> > Herb Gottlieb from New York City
> >
> > On Sat, 29 Jan 2000 16:49:31 -0800 "J. G. Locke" <lockejg@redshift.com>
> > writes:
> > > But, does solid water behave normally (expand as temperature rises)
> > > for any temperature range? For example, when solid water is
> > > warmed from -30 Celsius to -10 Celsius at 1 atm pressure,
> > > does it expand?
> > >
> > > John
> > >
> > > ||   -----Original Message-----
> > > ||   From: Herbert H Gottlieb [mailto:herbgottlieb@juno.com]
> > > ||   Sent: Saturday, January 29, 2000 3:55 PM
> > > ||   To: lockejg@redshift.com
> > > ||   Cc: PHYSHARE@LISTS.PSU.EDU
> > > ||   Subject: Re: Ice Spires.
> > > ||
> > > ||   > Herb, in what temperature range does solid water at 1 atm
> > > ||   > pressure expand when heated?
> > > ||   >
> > > ||
> > > ||   (Theoretically) the solid water contracts as it liquifies at 0C
> > > ||   and continues contracting until it reaches 4 C   after which
> > > ||   it expands.
> > > ||
> > > ||   Herb Gottlieb from New York City
> > > ||   (Where the exceptions prove the rules)
> > > ||
---------------------------------------------------------
brian whatcott <inet@intellisys.net>
Altus OK