Would I be right in saying that all of these materials are non-renewable?

Question

crude oil, coal, coke, pitch, cryolite, electricity, bauxite, alumina

Answer 1

Electricity is not a substance, so it's hard to say whether it's a renewable one or not.

The common wisdon says that the rest of these are not renewable.  crude oil, coal, coke, and pitch are questionable, though, on two counts.  First, one theory holds that over hundreds of millions of years, these things are renewable, so that might count if you're willing to wait.  Another theory holds that the planet makes this stuff over long periods of time.  Yet another holds that this stuff is ocasionally delivered to or near the surface, again over a long period of time.  Again, renewable if you're willing to wait.