Because they create ions
Liquid sodium chloride is a conductor but not the best.
It depends on the liquid. Oil would not be a good conductor of electricity. Water is a good conductor, though distilled water is not. Any liquid metal or ionic compound would be a good conductor.
some
No, solid oxygen cannot conduct electricity due to the fact it is a covalent molecular bond.
yes
mercury
Yes It Is
Gas is a good conductor of sound because its molecules are further apart compared to solid and liquid molecules, allowing sound waves to travel through with less interference. This means that the vibrations from sound can easily pass through the gas medium, making it an effective conductor of sound.
rubber
Mercury is the best conductor in its pure liquid state, as it has high electrical conductivity due to its free-flowing electrons.
The thicker the conductor, the less the current that will flow through.
Not a poor conductor. But conductivity is less compared to copper.