Question

write any two characteristics of Irreversible change

Answer 1

1) Properties of newly formed substance are different form the original substance. It is not possible to cover the original substance.

2) Why is sharpbing of a pencil consider to be a physical change? ( similar cutting of fruits and vegetables ).

Answer 2

hello! here is your answer:

1) It is not possible to recover the original substance. ... When paper is burnt, it forms a completely new substance i.e. carbon in the form of ash.

2)  It is not possible to recover the original substance  

3) A new substance is formed