I have a science fair on friday and i really need to do my project and for doing that i need to know what is the freezing point of rock water i did all the reaserches but i was not able to find that out then today my cousin told me abou this so i thought to get your help guys CAN SOMEONE PLZ TELL ME WHAT IS THE FREEZING POINT OF ROCK WATER OR WHERE CAN I FIND ABOUT IT PLZ and i also need some reasons like the y take so much time and something like that so SCIENCE SCHOLARS i really need your help
plz answer it in one day because this project is deu this friday the 7
2007-12-05 14:38:05 · 7 answers · asked by Stranger_persun 1 in Education & Reference ➔ Homework Help
"Rock water"?
The freezing point of water is 32F, or 0C, period. Well, technically, that is the melting point of ice, but it seems to work that way too, but conditions can make a difference. In a fluid that is in flux (river, lake, etc.) the mechanical environment may retard the formation of ice crystals.
Atmospheric water is a tad bit more complicated, atmospheric pressure will modify the freeze/melt, and even the boil/vapor points of the scale. Actually, gaseous pressures will change that scale from 32F/212F or 0C/100C to some substantially different numbers. The freezing point can actually become the boiling point if the air pressure is low enough.
Back to your rock, however, geologic water, as in water in rocks, takes two forms. There is what is commonly called juvenile water, a sort of capillary flow in cracks and fissures. This can, sometimes, crystalize, when the temperature and pressure is right. Then there is molecular water, water that is part of the composite or aggregate chemical composition of the rocks. This water does not crystalize. Crystaline water, ice, especially as typified by the snowflake, is a six-sided bonding of water molecules. There is a hole in the middle of each crystal unit, which then makes a lattice work of additional crystals. That is why ice is less dense than water, and floats, there is all that empty space. Molecular water inside the rocks doesn't have room to form crystals. Juvenile water, however, can, which is what causes some rocks to crack further or flake off (like the patches of concrete on my driveway over winter).
The freezing point of rock water, well it depends on the water in the rock. Molecular water isn't fluid, so it is sort of frozen in place no matter what the temperature (assay the water content of a common rock in mid winter or mid summer, it doesn't change). But if it is juvenile water, well, we go back to 32F or 0C.
2007-12-05 15:02:11 · answer #1 · answered by Rabbit 7 · 0⤊ 0⤋
i'm a biochemist...and i have no clue what rock water is. if you did the experiment, it's okay to not have the correct results. just report what you find honestly. i'm sorry. you could do a really cool experiment of DNA using this genomic database. you could make a prediction of how close mice DNA is to Human DNA. if your in middle/high school, this would be so impressive--it would definity give you an A.
this site: http://www.ncbi.nlm.nih.gov/blast/Blast.cgi
(remember gentic code is Adenine (A), Guanine (G), Thymine (T), and Cytosine (C).
This project would be very fast to do too, which is the best part.
2007-12-05 22:48:40 · answer #2 · answered by ti-83 plus! 3 · 0⤊ 0⤋
Your answer is the same in each of these websites. Review them....good luck
Chemistry of Ice-Cream Making: Lowering the Freezing Point of WaterIn both of these instances, salt is acting to lower the freezing point of water. For the ice cream maker, because the rock salt lowers the freezing point of ...
www.sciencebuddies.org/mentoring/project_ideas/Chem_p023.shtml - 28k - Cached - Similar pages
Water - MSN EncartaUnder standard atmospheric pressure (760 mm of mercury, or 760 torr); the freezing point of water is 0° C (32° F) and its boiling point is 100° C (212° F). ...
encarta.msn.com/encyclopedia_761573158/Water.html - 37k - Cached - Similar pages
Salt, Sidewalks, and Ice Cream Based on what happened to the temperature to our rock salt/ice mixture, ... The salt water has a lower freezing point and stays liquid at very low ...
www.newton.dep.anl.gov/askasci/chem03/chem03079.htm - 6k - Cached - Similar pages
Salt and the Freezing Point of Water ...Let's look at why a salt water solution has a freezing point below zero, .... 2 tablespoons rock salt - enough ice cubes to almost fill the bag ...
www.worsleyschool.net/science/files/saltandfreezing/ofwater.html - 12k - Cached - Similar pages
Google Answers: Lowering the freezing point of waterWhich lowers the freezing point of 2.0 Kg of water more, 0.20 mol or .20 mol of .... "Rock salt" is essentially NaCl, and the more expensive white "road ...
answer.google.com/answers/threadview?id=547572 - 19k - Cached - Similar pages
[DOC] Teacher Introduction:File Format: Microsoft Word - View as HTML
Road crews all over the country stock up on rock salt every winter to help melt the ... The freezing point of water is an example of a colligative property. ...
www.umanitoba.ca/outreach/crystal/resources%20for%20teachers/Freezing%20Point%20Depression%20&%20Boil... - Similar pages
Matthew Yglesias (February 16, 2007) - Snow Advice (Miscellaneous)Saltwater has a lower freezing point than does unmixed water. ... UPDATE: Yes, as they're saying in comments, rock salt is considerably cheaper. ...
matthewyglesias.theatlantic.com/archives/2007/02/snow_advice.php - 51k - Cached - Similar pages
General Chemistry Online: FAQ: Measurement: Why isn't 0°F the ...Daniel Gabriel Fahrenheit's temperature scale doesn't place 0°F at the lowest freezing point of salt water (-21.12°C, or -6.02°F). ...
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Melting Snow & Ice with SaltThe freezing point of water becomes lower as more particles are added until the point where the salt ... Sodium chloride (rock salt, halite), NaCl, -9°C ...
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Salt and the Freezing Point of Water ...Let's look at why a salt water solution has a freezing point below zero, .... Rock salt works well. For your enjoyment, here are two recipes for home-made ...
www.sci-experiments.com/ice_cream/saltwater.html
2007-12-05 22:55:56 · answer #3 · answered by Anonymous · 0⤊ 0⤋
freezing point of water is 32°F
What element is the rock made of?
2007-12-05 22:46:39 · answer #4 · answered by momoftwo 3 · 1⤊ 0⤋
go to ask.com and type in your ? it will tell you ..
2007-12-05 22:41:30 · answer #5 · answered by Anonymous · 1⤊ 0⤋
IT'S BRITNEY BlTCH!
2007-12-05 22:44:57 · answer #6 · answered by rawrrr! 1 · 0⤊ 1⤋
rock water............well water...............regular water...........32 degrees..........
2007-12-05 22:44:33 · answer #7 · answered by richard t 7 · 0⤊ 0⤋