Question

explain atleast four examples of changes of colour during chemical reaction ​

Answer 1

Question

• explain atleast four examples of changes of colour during chemical reaction

Answer

• A change in color is also another characteristic of a chemical reaction taking place. For example, if one were to observe the rusting of metal over time, one would realized that the metal has changed color and turned orange. This change in color is evidence of a chemical reaction

Answer 2

Answer: mercury + oxygen gives mercuric dioxide which is red in colour

Fe+Copper Sulphate gives iron sulphate( green in colour) + copper

Na2SO4+BaCl2 gives BaSO4hwhite in colour) + NaCl

lead nitrate + potassium iodide gives lead iodide ( yellow in colour ) + potassium nitrate