* Floating: Generally, solid metal will not float on molten metal. Metals have a higher density in their solid state than in their liquid state. This means that a solid piece of metal will sink to the bottom of a pool of molten metal of the same type.

* Contact: However, solid metal can definitely be in contact with molten metal. This is how metal objects are cast, for example. The solid mold comes into direct contact with the molten metal.

So, to summarize:

* Floating: No, typically not.

* Contact: Yes, absolutely.

Let me know if you have any other questions!