Question

the two metal pieces magnesium and iron are strongly heated sparately. the following changes were observed.

options are here:-
1.magnesium pieces burns with bright white flame leaving behind powdered mass.
2.iron piece glow red when heated strongly.
which one of these is a chemical change?
(a) 1. only
(b)2.only
(c) both 1. and 2.
(d) neither 1. nor 2.

Answer 1

b) 2. only is correct