Question

EXCERCISE
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.
(e) A catalyst either_ or_ not 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:

this is easy question only read and understand the word then solve

Answer 2

Answer:

a....displacment

b....Double displacement

e....accelerate,decelerate,unchanged

d....blue , white gray