Carbon in the form of graphite is used as an electrical conductor (the brushes in electric motors)
Its electrical conductivity is not known. The thermal conductivity is only 5.65×10^−3 W/(m·K). By way of comparison, silver, the best conductor has a conductivity of 430 W/(m·K) - more than 75 thousand times as great.
It is a good conductor when melted or dissolved in water, but not when solid. This is because it is an electrolytic conductor, and can only carry electricity when its ions are free to move.
Aluminum (or Aluminium) is a good thermal and electrical conductor, having 59% the conductivity of copper, both thermal and electrical, while having only 30% of copper's density.Aluminum is capable of being a superconductor, with a superconducting critical temperature of 1.2 Kelvin and a critical magnetic field of about 100 gauss (10 milliteslas).
copper is a very shiny metal, with an orange-gold colour. It is a really good conductor of electricity, second only to silver. it doesn't corrode easily and is ralatively cheap since its very abundant. its very malleable and ductile.
PETROL IS A BAD CONDUCTOR OF ELECTRICITY. BUT IF YOU INDUCE IONS IN PETROL THEN IT CAN ACT AS A SEMI CONDUCTOR. IT ALL DEPENDS ON THE MEDIA OF TRANSMISSION. IF THEY ARE IONS WHICH ARE TRACES OF METAL THEN ANY INORGANIC MATTER CAN ACT AS GOOD CONDUCTOR. ELECTRICITY IS ONLY ABOUT THE AFFINITY OF NEGATIVE CHARGED ELECTRONS TO POSITIVE ELECTRONS TO SATISFY THE LOSS OF ONE SINGLE ELECTRON FROM ONE OF THE ELECTRONIC CONFIGURATION RINGS I.E s,p,d OR f. WHERE IN THE VALENCY IS SATISFIED AND THE MEDIUM CAN BE ANY MATERIAL. ALL DEPENDS ON THE IONIC AFFINITY.
water
That would be water.
No because only metals are good conductor of heat and gas is not a metal.
Water is a conductor that is not metal.
diamond
Graphite
Because electricity can only travel through metal.
Note: "electricity" is not conducted, only electrical current (the flow of electrons) is. Electricity is the field that covers all things electrical. The wood in a pencil is an insulator. If it is wet, it is a poorer insulator, but only a poor conductor. The carbon (lead) in the pencil is a poor conductor. The metal holding the eraser is a good conductor. The rubber eraser is a poor conductor. You really have to address the conductivity of specific substances, not items that are build from a variety of substances.
No
Sodium chloride is different from a metal as an electrical conductor. This is because sodium chloride is an ionic compound and therefore can only conduct electricity when molten or dissolved, as the ions are free to move in this state. However, metals can conduct electricity when solid or molten because the atoms are free to move in both states, therefore they can carry an electrical charge. This is therefore the difference between sodium chloride and metals as an electrical conductor.
An object which is a conductor can conduct (or transfer) heat or electricity. Every single metal is a conductor (that is why mercury is considered a metal, because it conducts). A saucepan is made of metal because it can transfer the heat well. Other than a "super-conductor" which can only be made in laboratories, Gold is the best conductor, followed by silver then copper. We use copper for electrical wires because gold and silver are too expensive.
Metal is a good conductor. Any charge will quickly be distributed over the entire metal piece.