You have an unknown substance in the lab. It
conducts electricity well. If
you had to make a guess
about this substance, what
would you guess about it?
A. The substance is most likely a base.
B. The substance is most likely an acid.
C. You cannot determine whether the
Substance is an acid or a base from this
information alone.

Subduction zones form when an oceanic plate collides with another oceanic plate or continental plate. the continental crust is lighter and less dense than oceanic crust. continental crust's density is approximately 2.7 grams per cubic centimeter. oceanic crust is thinner and the average density is about 3.3 cubic centimeters. when the two crustal plates converge the oceanic plate always bends and subducts beneath a continental plate. once the oceanic crust subjects, the rocks are subjected to changes in heat and pressure. because of this, we would expect to find rocks in the area of a subduction. a) clastic b) igneous c) metamorphic d) sedimentary