Mariana conducted an experiment where she burned a 5 g strip of magnesium metal in an open flame. The result was a 3.5 g white ash collected in a crucible, a bright white flame, and smoke. Was the law of conservation of matter upheld in Mariana's experiment?
a
yes, because the missing mass was trapped by the closed system
b
no, because mass decreased after the magnesium was burned
c
no, because the magnesium was burned so mass was not lost
d
yes, because the missing mass was released as smoke