Question

Which of these changes do not involve forming or breaking chemical bonds?

A.
burning and melting

B.
rusting and cutting

C.
burning and digesting

D.
boiling and melting
d

Answer 1

is d right @BrandonR and sorrry :DDDDDDDDDDDD

Answer 2

hint:
rusting and cutting is a mechanical change

Answer 3

Indeed cutting and rusting is a physical change....

Answer 4

so its rusting an d cuting?

Answer 5

more precisely, rusting is a chemical reaction which involves a change of number of electrons between two elements

Answer 6

yes! I think option B

Answer 7

i'll try it

Answer 8

sounds like your taking a test :"D

Answer 9

its worng and i;m doing k12 homework