Aluminium will always float in Mercury. The mass of the Aluminium is irrelevent. If you think of a more common example does it matter how big the piece of wood is as to whether it floats in water? Aluminium floats in Mercury because it is lighter than the same voluime of Mercury just as wood floats on water because it is lighter than same volume of water.
Actually, your aluminum will be rapidly destroyed by mercury. The aluminum dissolves in mercury, and then the pure aluminum becomes exposed to the oxygen in the air, and rapidly oxidizes. Thus allowing some more aluminum to be dissolved into the mercury, and so on. The growth of a column of aluminum oxide is sufficiently rapid for it to be seen with the naked eye to be growing .
This is why the airlines are pretty touchy about anyone shipping mercury in their craft. Once released into the vehicle, it is essentially impossible to remove it.
Mercury is a biohazard and is dangerous to your health. Do not play with this fascinating material.
The less dense substance will float in the denser substance.
Float
Lead floats in mercury.
Solid iron will float in liquid Mercury. In most liquids it will sink.
Wood will. A solid block of aluminum will sink. Things float when their density is less than water. There are some woods that sink.
Generally speaking, a denser substance will sink in a less dense substance. Assuming standard temperatures, since aluminum has a density of about 2.7 grams per cubic centimeter and water only has 1 gram per cc, aluminum would sink. A thin aluminum foil could float by virtue of the surface tension on water (but if submerged, will sink). An aluminum boat would float because it displaces a greater mass of water than its own weight. An aluminum block could also float on a liquid of higher density than the aluminum.
Sink
Float
Depends on the medium, and whether the ball is solid or not. A solid ball would float on mercury, sink in water. If it were hollow enough (or filled with, say, cork) it would float in water.
A block of aluminum will float on a pool of mercury at nearly any temperature (except at extremely elevated temperatures (above 350 °C) where mercury is no longer liquid) The density of aluminum is 2.70 grams per cm3, whereas the density of mercury is 13.53 grams per cm3. Therefore mercury is more than 5 time more dense than aluminum! Anything that is less dense than a liquid will float in that liquid. Not only would aluminum float but it float with only 1/5 of it's volume submerged.
Mercury is a heavy metal, it will sink in sea water.
Lead floats in mercury.
Solid iron will float in liquid mercury. In most liquids it will sink.
It will sink in water, but it will float in mercury. Depends on what the liquid is.
Oil is denser than cork, so the cork would float.
Answer #1: float.==========================Answer #2:The density of aluminum is 2.7 gm/cm3.So, just like steel, if you shape a piece of it just right so that it displacesenough water, you can make it float. But a lump of it will sink in water.
Solid iron will float in liquid Mercury. In most liquids it will sink.
Wood will. A solid block of aluminum will sink. Things float when their density is less than water. There are some woods that sink.