Question

which of the following are chemical change
a) growth of a plant
b) rusting of iron
c) mixing of iron filling and sand
d)cooking of food
e) digestion of food
f) freezing of water
g) burning of a candle
​

Answer 1

A) yes
B) yes
C) no
D) yes
E) yes
F) no
G) yes



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Answer 2

Explanation:

b,d,e,are the chemical change but g is both physical and chemical change