Question

An example of chemical change is
A
lodine crystals changing into purple vapour
upon heating
B
Sugar changing into a black solid upon
heating
C
A piece of ice changing into water upon
heating
D
A block of dry ice gradually disappearing
when left at room temperature​

Answer 1

Answer:

B is your answer.

Hope it helps you.

Answer 2

Answer:

B

This is your answer, hope it helps you.