Does hot liquid rise and cold liquid sink?

Answer 1

Yes, of course. Temperature really hasn't much to do with floating or sinking at all. Whether a liquid will float or sink in another liquid depends only on whether the first liquid has a higher density than the second one or not. By density here is understood how much 1 l (liter) of the liquid weighs in kg (kilogram) (other units of measurement can be used). The density of water for instance is approximately 1 kg/l (kilogram per liter). The density of Mercury is approx. 13.5 kg/l. Although liquids (and solids and gasses) do usually decrease in density with increased temperature due to thermal expansion, in the case of Mercury/water, burning hot Mercury would still sink like a stone even in cold freezing water. And conversely, freezing cold Mercury would sink in boiling hot water... Burning white hot molten steel would also sink in water. As long as the density of the cold liquid is higher than the density of the hot liquid, the first liquid will always sink in the second one.

Answer 2

If we are talking about one single kind of liquid such as water, the question is, does hot water sink in colder water, and the answer is no, it rises. Heating makes things expand, and therefore become less dense. And a less dense fluid will rise. On the other hand, mercury will sink in water, even if it is much hotter than the water around it.

Answer 3

Heat rises because it is less denser than the cold. When the heat hits the top it gets cooler and goes back down again because it's denser. Then the step keeps repeating itself. Well for the mantle of course.

Answer 4

Yes, it can. However, the phenomenon is so short-lived it is difficult to observe. When any perturbation in the boundary layer (like vibration, temperature change, convection current,...) between the two occurs the cold liquid wants to sink through the warm layer. If you color one of the layers, it makes the separation more obvious. The life of the phenomenon can be extended by using different solutes, switching the layers, and some other initial conditions.

Answer 5

Generally it happens like hot liquid is a better solvent, but there are some liquids which dissolve when it is at normal temperature. the science behind the solution is its not a reaction, and it is reversible in nature. what happens when we heat up any liquid the intermolecular spaces increases and the other part of the solution comes in quickly and easily.

liquid like

Polymethyl Phenyl Siloxane Fluidare stable liquid, the density and viscosity negligibly changes while heating, solution of such solvent might show a consistency while making a solution irrespective of temperature.

Answer 6

Because cold water has a lower density then warm water

Answer 7

this is due to tectonic plates that means movement of plates

Answer 8

convection current

Answer 9

Hot water rises.

Answer 10

It floats until it melts.