Give examples of one element from the alkali metals group and one from the halogens group. Include each element's atomic number, atomic mass, number of neutrons, number of valence electrons, number of electron shells, and some common characteristics of elements from its group.

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