Which of the following process undergo a chemical change?
1) Digestion of food
2) Respiration
3) Evaporation of water
4) Burning of wood
Options:
a) 1 and 2
b) 2 and 4
c) 3 and 4
d) 1,2 and 4
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Explanation:
A chemical change is a change that brings a change in the chemical properties of matter and a new substance is formed.
Examples of chemical changes from the given list of changes are:
Rusting of iron, Cooking of food, Digestion of food, and Burning of a candle.
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