Question

.......
1. Complete the following statements.
(a) The chemical change involving iron and hydrochloric
acid illustrates a .............. reaction.
(b) In the type of reaction called
two compounds exchange their positive and negative
radicals.
(c) A catalyst either ...........
the rate of a
chemical change but itself remains ............. at the end
of the reaction.
(d) On heating, hydrated copper sulphate changes its colour
from .............. to ................​

Answer 1

Answer:

d blue to green it may help you