Question

In Exp. 3A, why you should avoid the magnesium metal from catching on fire?

A.because flames will cause a crack in the crucible cover

B. because flames will carry magnesium oxide out of the crucible

C. to avoid burning your fingers

D. because flames will cause magnesium oxide to turn into magnesium nitride

E. because flames will cause magnesium oxide to turn into magnesium hydroxide

Answer 1