Question
Changes in which new substances are formed are called __ changes.
Answer: Option A
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Changes in which new substances are formed are called chemical changes.
Chemical changes occur when a substance combines with another to form a new substance, called synthesis or, alternatively, decomposes into two or more different substances. At the molecular level, chemical change involves making or breaking of bonds between atoms.
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Question 1.
Chemical changes are mostly irreversible.
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