yes
Techinically yes. But not very well at all.
No, BUT -- leather can absorb moisture, and water is a good conductor.
It is not a heat conductor.
It depends of what it is made of. Leather beach ball is not a conductor.
nether.
yes all materials conduct electicity , but some are good conductor , some poor and some very poor
Wood can not let a light bulb light up because wood is a very poor conductor of electicity. A better conductor would be types of metals such as copper or gold, which is used in many electronics.
Metal is the best conductor of electricity with respect to machinery and electrical wiring in building structures. Copper is perhaps the most common metal used in such instances. Gold is often used in micro-electronics. While it is much more expensive, it is a better conductor. Not that much gold is needed in micro-electronics.
water
electicity
kilowatts