A metal compound is held together by the attraction of the positive nuclei in each atom and the mobile electrons from the outer energy level of each atom. The fact that the electrons are free to move around the structure means that even if the structure changes shape there will still be an attraction between them and the positive nucleus of the atoms.
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they used them for making lots of this in there lifes
Metals are conductive, but are not perfect conductors and so they have some electrical resistance. How the resistance of the metal is affected by "thickness" depends on what you mean by thickness. If the electrical current has to flow through a longer piece of metal, then the resistance of the metal to electrical flow would be greater. However, if you take that same length of metal and increase the area of the metal by increasing its "thickness", then the resistance of the metal becomes less.
Resistance decreases as more carriers are thermally generated with increased temperatures in a semiconductor. In metals there are plenty of carriers so the increase is negligible compared to the increased scattering off the lattice and impurities as temperature increases and therefore resistance increases with temperature.
She was made of metal... lots and lots of metal.
If you mean the metal limbs, it's called Automail.