Question

Will Al, Zn, Fe, Ni, Cu, Ag, Pb...etc metals ever float in water, given their densities are all above 1 g/mL?

Isn't the answer yes since air can effect boyant force? What exactly is that?

Answer 1

Note that all metals liested above are much denser than 1 g/mL, therefore, if they are not molded to anothe shape, they will sink.

Note that If we have a volume which allows the "air" fill up inside, then the metal can be used to FLOAT, which is what happens with most ships in the world.

The weight due to thei masses is much less than the buoyant force due to the volume which is displaced by the volume of such container.

Therefore, the water pushes the boat upwards stronger than the downward weight (due to density and mass)