Question

TICK (1) THE CORRECT CHOICE AMONGST THE FOLLOWING:
Sublimation of iodine is a :
(a) Chemical change
(by Physical change
(c) Periodic change
(d) Irreversible change
When magnesium ribbon is burnt, heat and light are produced. It is an example of
(a) Chemical change
(b) Physical and irreversible change
(c) Chemical and exothermic change (d) Chemical and endothermic change
New Trends in ICSE Chemistry - 7​

Answer 1

Answer:

1.

b) Physical change

2.

a) Chemical change