Anamalous behaviour of water


by djsourabh
Tags: anamalous, behaviour, water
djsourabh
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#1
Sep7-13, 06:10 AM
P: 59
What is the exact scientific reason behind anamalous behavour of water?
Can the temperature range at which this happens be changed?
do any other substances also behave anamalously?
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Enigman
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#2
Sep7-13, 06:39 AM
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mmm....what's anomalous?
SteamKing
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#3
Sep7-13, 08:06 AM
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No, no, the OP clearly said anamalous, whatever that is.

Dadface
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Sep7-13, 08:09 AM
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Anamalous behaviour of water


He did say anamalous but that was probably just a typing error. He meant to write anomalous.
Borek
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#5
Sep7-13, 09:11 AM
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He wrote anamalous three times, it is not a typo.

To OP: please elaborate. In most cases water behaves as every other liquid. Sometimes it doesn't, but you need to explain what you mean if you want to get any help.

Besides, it looks like a HW question to me...
djsourabh
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#6
Sep8-13, 06:44 AM
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Sorry for typing mistake.
I meant ' anomalous' only.
It's not a HW question.
Enigman
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#7
Sep8-13, 06:49 AM
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So what are you talking about Sourabh?
Large specific heat, expansion while freezing, inertness, or something else?
djsourabh
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#8
Sep8-13, 11:00 PM
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The weird behaviour at 4 C to 0 C .
Enigman
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#9
Sep8-13, 11:27 PM
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Well, water is composed of three atoms two hydrogen and one oxygen. So a molecule looks likes this:

-When the temperature decreases the molecules start slowing down.
-This causes the volume to decrease and density to increase until 4C while its still in liquid state.
-After this the molecules start crystallizing in a cage like structure by hydrogen bonding. Hydrogen bonding is a weak molecular interaction between the oxygen of one molecule and Hydrogen of another.
-In the crystallization process the density decreases and volume increases as the H-bonds push molecules apart to maintain a stable crystal lattice.
-The differences can be seen in this image [left is liquid and right is ice]:

The temperature and pressure relationship of water is given by:
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MSP20589212327198539cfif000048c76e0iigfi4ii4.gif   MSP42351cd0693ba0b5fieg000063h9g4d8ah1i7a39.gif  
ModusPwnd
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#10
Sep9-13, 12:15 AM
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Bonds, bonds - Hydrogen bonds!
Drakkith
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#11
Sep9-13, 12:49 AM
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Quote Quote by ModusPwnd View Post
Bonds, bonds - Hydrogen bonds!
Bond... hydrogen bond.
Shaken, not stirred.
Enigman
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#12
Sep9-13, 01:00 AM
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Quote Quote by Drakkith View Post
Bond... hydrogen bond.
Shaken, not stirred.
Nooo, supercool it and then shake it! The drink shall turn to Ice cream...


The actual drink is a Vesper martini, it went like this:
"A dry martini," Bond said. "One. In a deep champagne goblet."
"Oui, monsieur."
"Just a moment. Three measures of Gordon's, one of vodka, half a measure of Kina Lillet. Shake it very well until it's ice-cold, then add a large thin slice of lemon peel. Got it?"
djsourabh
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#13
Oct3-13, 04:18 AM
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Quote Quote by Enigman View Post
Well, water is composed of three atoms two hydrogen and one oxygen. So a molecule looks likes this:

-When the temperature decreases the molecules start slowing down.
-This causes the volume to decrease and density to increase until 4C while its still in liquid state.
-After this the molecules start crystallizing in a cage like structure by hydrogen bonding. Hydrogen bonding is a weak molecular interaction between the oxygen of one molecule and Hydrogen of another.
-In the crystallization process the density decreases and volume increases as the H-bonds push molecules apart to maintain a stable crystal lattice.
-The differences can be seen in this image [left is liquid and right is ice]:

The temperature and pressure relationship of water is given by:
Thank you for such agood description.
My next query is "can the temperature range at which this phenomena occurs be changed by any means?"


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