An atom in the ground state has seven valence electrons. this atom could be an atom of which element?
(1) calcium (3) oxygen
(2) fluorine (4) sodium

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

If two objects at different te,peraure are in contact with each other what happens to their temperature

Heat is the total potential energy of a substance that can be transferred. true false