Question

which of the following is chemical change. a, boiling water b, burning of candle. c, mining of iron filling and sand d, passage and electricity through wires​

Answer 1

Answer:

option (b) burning of candle

Explanation:

Growth of a plant, rusting of iron, cooking of food, digestion of food, and burning of candle are chemical changes because here the chemical composition of the substance changes.

Answer 2

Chemical Changes:

b, burning of candle

c, mining of iron filling and sand

d, passage and electricity through wires

Physical Changes:

a, boiling water