A thin sheet of alu foil may stay on the surface as long as there is no water sprayed on it nor immersed under water, then it will sink.
yes
Simply make its thickness small and base area large...Added:..... a thin sheet of alu foil may stay on the surface as long as there is no water sprayed on it nor immersed under water, then it will sink.
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.
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.
yes
I mean you COULD.. but then you'd run the risk of having aluminum in your food
If the object does not quite float in water, adding salt to the water might make the object float, yes.
Iron, copper, gold, aluminum, brass, titanium, zinc. I believe all metals are heavier than water but some thin sheets of metal such as Aluminum can float due to its bouyancy. You can probably cut anything into small enough size such that it would float. BTW, I can make steel float----in liquid lead.
If the proposal is to float the metal on water, most metals won't float. That's because most metals are more dense than water and will sink. Note that this proposition sets aside any reaction that might occur between the metal and water. This is because there are some metals that react with water, and some react violently. See the link below to the related question about the metals that will float on water. There aren't many of them. If the metal you are considering isn't on the list of metals that willfloat on water, then it won't.
If the can is empty, and you avoid water from entering it, it will float without any trouble.
The salted water is denser than pure water and eggs can float.
it makes bubbles in water which has enough energy to make it float