OK, here's the experiment.
You have two cups of water. One has green (just food coloring, no effect), salty, cold water and the other cup has hot red (food coloring) water. You put a little slip of paper on top of the green colored cup and you flip the red colored cup on top of it upside down quickly. Now, you have the green on the bottom and the red upside down on the top with a card separating them both. You take the card out, and what happens? You would think they would mix, but instead they stay right where they are? I need two questions answered...
1. Why did the hot red water stay on the top and not mix with the green water? (Hint: has to do with solids, liquids and gases)
2. Why did the green, salty, cold water stay on the bottom? (Hint: Has to do with chemical changes)
If you can help me, it would be greatly appreciated, because I am very confused. Thanks so much!!!!!
2006-11-30 10:29:53 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology
Ok, this is a weird question, but here's my best answer. The 2 liquids stay separate because of density. The green liquid is cooler and contains salt, both of which increase its density. The red liquid is warmer (its molecules are moving faster and are farther apart) so it's less dense and should float on the denser green solution (unless you shake them, which is why the card method is used).
2006-11-30 10:35:44 · answer #1 · answered by BioBill 1 · 1⤊ 0⤋
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2016-11-29 23:55:42 · answer #2 · answered by ? 4 · 0⤊ 0⤋
liquids to stay in position.
the reason for the hot red water to stay up is the reason for the cold salt water to stay down.
there are 2 reasons heat rises so hot water is lighter than cold water which will sink.
the other is that anything with a higher density will sink while lower density will float' so salt water is denser than fresh water.
2006-11-30 11:34:25 · answer #3 · answered by gabegm1 4 · 0⤊ 0⤋
They remain separated because water in higher temperature is lighter, and water in lower temperature is heavier. At the same time, having salt in it makes it even heavier. Heavier water remains at the bottom and lighter water remains at the top.
If you keep watching this for a while, though, temperature will start to merge and they will mix. Also, salt moves from portion of more salt to less salt. It will also cause the mixing.
2006-11-30 10:42:47 · answer #4 · answered by tkquestion 7 · 0⤊ 0⤋
Neither hint applies. The main reason is that salt water is denser than fresh water, so the red fresh water "floats" on the green salt water.
2006-11-30 12:38:17 · answer #5 · answered by JIMBO 4 · 0⤊ 0⤋
Salt water is heavier, and stays on the bottom. Heat rises, so the hot water stays on top.
2006-11-30 10:36:16 · answer #6 · answered by Kevin H 7 · 0⤊ 0⤋
that is rly rly cool.....i bet it would have something to do with hydrogen bonds......but i rly have no clue, that is awesome.....i wana try that
2006-11-30 10:34:38 · answer #7 · answered by Sam Hunley 2 · 0⤊ 0⤋
do it ur self
2006-11-30 10:32:33 · answer #8 · answered by Elsa 1 · 0⤊ 0⤋