Which of the following involves a chemical change?(1) sublimation(2) oxidation(3) neutralization(4) condensation (1), (2), (3), and (4) (1) only (2), (3), and (4) only (1) and (3) only (2) and (3) only
Question
Which of the following involves a chemical change?(1) sublimation(2) oxidation(3) neutralization(4) condensation (1), (2), (3), and (4) (1) only (2), (3), and (4) only (1) and (3) only (2) and (3) only
Solution
The options that involve a chemical change are (2) oxidation and (3) neutralization.
In a chemical change, the composition of the substance changes and a new substance is formed.
(1) Sublimation and (4) condensation are physical changes, not chemical. In sublimation, a substance changes from a solid to a gas without becoming a liquid. In condensation, a gas changes into a liquid. Neither of these involve a change in the substance's composition.
So, the correct answer is (2) and (3) only.
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