The reaction 2Mg(s) + O2(g) --> 2MgO(s) is a Group of answer choices
double-replacement reaction.
decomposition reaction.
synthesis reaction.
single-replacement reaction.

Noble gases are the most reactive elements on the periodic table. a. true b. false

If the element whose electric configuration ends in the d sublevel, the element is calssified as? a.inner transition b.noble gases c.representative d. transition

Clyde and marilyn are riding a roller coaster. during which section(s) of the track is their potential energy converted to kinetic energy? a. from point b to point c only b. from point b to point d only c. from point a to point b only d. from point a to point b and from point c to point d