Question

(a) State the evidence of chemical change that is easily detected in the
following reactions.
(i) Reaction between sodium chloride and silver nitrate
(ii) Reaction between baking soda and vinegar​

Answer 1

The evidence of chemical change can be detected as follows:

Explanation:

• i) When sodium chloride reacts with silver nitrate, silver chloride and sodium nitrate is formed. The evidence of the occurrence of this reaction is the precipitation of silver chloride which can be observed.

• ii) When baking soda reacts with vinegar, carbon dioxide is formed quickly and the foaming  can be observed .