If you want to physically do it, connect up a simple circuit with wires, a battery and a small bulb. Put the object in the circuit (touching the wires) - if the bulb light, its a conductor.
You can conduct electricity through liquid mercury.
only metal elements conduct electricity, and they do it very well
nonmetal
metals
a sulphur element has no mobile electrons
Yes, A Rusted Nail can conduct Electricity because every element has some free Electrons in it, and remember, free electrons always conduct Electricity. --Dhruv
carbon
Br
It is shiny, will conduct electricity.
Bromine only conducts electricity when bonded with another metal/element.
gold and silver are low conductors
The element copper can conduct electricity. These are two completely different chemical substances.