Question

A. Fill in the blank spaces:
0 When a chemical change takes
place in matter, we commonly say a
reaction takes place.
[physical/chemical]
(1) When copper sulphide is treated
with hydrochloric acid, it gives a
smelling gas hydrogen
sulphide
[fine/foul
(iii) Potassium iodide solution reacts with
lead acetate solution to form potassium
acetate solution and
precipitate of lead iodide. [green/yellow​

Answer 1

Answer:

all questions are mixed plz write it properly