malleable
Malleable material
Yes - depending on what you call "thin". Gold is capable of being hammered much thinner.
No, helium cannot be hammered into sheets. Helium is the only element that cannot be cooled sufficiently to become a solid. It remains liquid at the lowest temperatures we can achieve, and that's very, very close to absolute zero. As helium is a gas or a liquid and never a solid (at least not yet) we don't see it treated as a solid, like being hammered into sheets.
Yes, gold can be hammered into sheets. A piece of gold the size of your thumbnail can be hammered into a sheet the size of a tennis court. Gold can be milled or pressed down to gold foil. This is the thinnest millage for gold and can be 50 times as thin as the human hair. It is so fine, your breath can break it.
This is a malleable metal.
Yes silver can be hammered into sheets.
Some metals such as Gold, Silver and Aluminium.
Any malleable metal (gold is the champ).
metals
no because oxygen cannot be hammered
This is malleability, which is a property of metals.
The fact that it can be hammered into sheets would seem to be the most relevant characteristic in this case.
There are a number of metals that can be hammered into sheets, and gold is the best of them. It is the malleability of metal that allows it to be hammered thinly, and a link to that related question can be found below.
Malleable , malleability is the ability of a metal to be hammered into thin sheets.
malleability
"ductility"