the latter
reversible
Burning is an irreversible change.
No, burning a candle is not reversible. When a candle is burned, the wax is melted and the wick is consumed, resulting in irreversible changes to the candle's structure.
Although there is some ongoing research into the possibility, the process of burning is currently considered to be irreversible.
Burning of a cracker is an irreversible change. Once the cracker is burnt, it undergoes a chemical reaction that cannot be easily reversed to its original form.
Irreversible
reversible!
A Bunsen burner is an object: it is not a process of any kind.
reversiublrt
Reversible
Yes, this change is reversible.
reversible