Which statement is true about endothermic and exothermic reactions? (5 points) a
Kinetic energy is absorbed and converted to potential energy in an endothermic reaction.

b
Kinetic energy is absorbed and converted to potential energy in an exothermic reaction.

c
Energy is released in an endothermic reaction.

d
Energy is absorbed in an exothermic reaction.

12. complete each of the following word equations for synthesis reactions. a. sodium + oxygen -> b. magnesium + fluorine -> 13. complete and balance the equations for the decomposition reactions. a. hgo -> [with the triangle heat symbol above the arrow] b. h2o(l) -> [with "electricity" written above the arrow]

Which of these conditions most likely produces an unstable isotope?

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