Select the correct answer from each drop-down menu.
consider the substances hydrogen (h2), fluorine (f2), and hydrogen fluoride (hf). based on their molecular structures, how does the
point of hf compare with the boiling points of hy and fy?
the boiling point of hf is
the boiling point of h2, and it is
the boiling point of f2.

Rocks, as they are compressed, begin forming mountains above the earth's surface when two continental plates converge. the continental crust increases in depth as the mountains grow above. the himalayan mountains formed at a convergent plate boundary in this manner. the rocks are smashed together causing them to due to the intense heat and pressure from the colliding plates and eventually forming rock. a) melt; igneous b) layer; sedimentary c) recrystallize; metamorphic d) melt into the earth's interior; metamorphic