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Chemistry 9 Online
OpenStudy (sarahc):

Water molecules move farther apart when water freezes, causing it to expand. Which of the following is a consequence of this property? Water is considered to be a universal solvent. The water in lakes and ponds freezes from the top down. Only a limited amount of solute can be dissolved in a sample of water. Objects with a higher density than water can be observed floating on water. I'm thinking D?

OpenStudy (jfraser):

ever seen a chunk of rock floating on top of LIQUID water?

OpenStudy (sarahc):

no

OpenStudy (jfraser):

so it can't be D. A and C are all true, but they don't have anything to do with the freezing of water.

OpenStudy (sarahc):

I didnt think ponds could freeze from the top down

OpenStudy (jfraser):

you don't live in an area where rivers freeze on a regular basis, do you?

OpenStudy (jfraser):

ever seen pictures of the arctic ocean? or ice fishing?

OpenStudy (sarahc):

florida lol

OpenStudy (sarahc):

yes but the whole thing freezes?

OpenStudy (jfraser):

the whole thing? no. but the surface will freeze, sometimes several feet thick.

OpenStudy (jfraser):

in northern NH, where I live, ponds will freeze about 12" thick, but the liquid water underneath stays around 4 degrees, all winter long. fish and other animals stay in that layer to survive.

OpenStudy (sarahc):

Oh I knew that. I thought it was saying they freeze all the way..okay. thanks

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