Because it is less dense than water. Basically, there is more space between atoms of aluminum than molecules of water, sort of like water and oil.
It would simply float back to the surface!
Aluminum powder will sink in water because it is denser than water.
Depends on what they're dropped into. Water - no. But drop them into something that's denser than aluminium and they will float.
Shape the aluminum to look like a boat, so it displaces enough water to float. The force supporting the aluminum is the buoyant force. It is equal to the weight of the volume of water displaced.
Yes
Yes, aluminum can float in water because its density is lower than that of water. However, the surface of aluminum quickly oxidizes upon contact with water, which creates a thin layer that prevents it from sinking immediately.
A solid bar of aluminum would not float, since its density (almost 3 grams per cc) is greater than that of water (1 gram per cubic centimeter). For an object to float in water, its density would have to be less than 1.0.
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.
The aluminum foil is less dense than the water which makesit float. Aluminum foil is not less dense than water. It is more dense. The reason that aluminum foil floats is that the surface tension of the water will hold the sheet of foil. If you still think that the aluminum foil is less dense than water, try floating a roll of foil in a bucket.
No, aluminum soda cans will sink in water because aluminum is denser than water. The air trapped inside a closed soda can may cause it to briefly float, but it will eventually sink.
Aluminum.
The 1-kg block of wood will float on water, while the 1-kg block of aluminum will sink. This is because wood is less dense than water and has a greater buoyant force acting on it, causing it to float. Aluminum is denser than water and will sink when placed in water.