2007-04-13 17:24:54 · 5 answers · asked by LORI V 1 in Science & Mathematics ➔ Other - Science
More oxygen will dissolve in cold water than warm water.
The fish breath the dissolved oxygen in water. When it gets warmer the oxygen leaes and the fish die.
Fish can not live in boiled, cooled water.
The rule of gas and solutions is cooler, more gas dissolves.
If you leave a glass of cold water over night, you see little bubbles inside in the morning where the dissolved air is coming out of solution.
2007-04-14 06:19:36 · answer #1 · answered by science teacher 7 · 0⤊ 0⤋
cold water holds more dissolved gases than water, so its TRUE
This is why some fish (and in particular freshwater fish) can only live in cold streams as their bodies require more oxygen to survive and will die if stream temps are raised a little as there will be less dissolved oxygen.
Also you can see this when you have a carbonated drink. It will be fizzier when its colder (and you get the bigger "chi" sound when you open the bottle), and warmer drinks are less fizzy (as it holds less dissolved CO2).
One last thing...boiled water is bascially de-oxygenated water. When it boils what is helping make those bubbles is the dissolved gases, so boiled water has very little gaes in it compared to water just out of the tap.
2007-04-13 19:07:21 · answer #2 · answered by mareeclara 7 · 3⤊ 0⤋
Cold water will hold more oxygen than hot water. Actually any cold liquid will retain a dissolved gas easier than a hot liquid. Prove this to yourself by chilling one bottle of seltzer water and warming another bottle. When you open them the warm bottle will release it' dissolved gas much more violently than the cold bottle. Granted the gas we are dealing with in this case is carbon dioxide, but the same principle holds true for oxygen.
2007-04-13 17:54:56 · answer #3 · answered by Bill W 3 · 1⤊ 0⤋
Cold water holds more O2 !
Easily proven, ever get up and get a cold glass of water in the middle of the night ? drink half, then see the bubbles in the glass of water when you wake up in the AM, the water warmed up, the 02 is trying to escape in the form of bubbles in the glass, because, warmer water holds less O2, thats why fishing fleets head north, more fish in colder oxygen enriched waters.
2007-04-13 19:12:18 · answer #4 · answered by Anonymous · 3⤊ 0⤋
At atmospheric pressure, I don't think you can dissolve any oxygen in either hot or cold water, or any hydrogen either.
2007-04-13 17:38:22 · answer #5 · answered by gatorbait 7 · 0⤊ 3⤋