Question

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 .............. or .............. 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:

a) single displacement reaction

b) double displacement reaction

c) increases or decreases, unchanged

d) blue to white

hope it helps u..

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