Question

is sublimation of naphtheline a chemical change

Answer 1

Explanation:

naptheline is directly converted into gas by sublimation . it is a chemical change .

Answer 2

Explanation:

It's a physical change, because there is no chemical reaction involved. Naphtalene's temperature is risen and it eventually sublimates, but, it's chemical composition remains the same. If you cool it back down, you'll obtain the same compund.

I think u Understand the answer.