Question

2. Define a chemical change.​

Answer 1

Answer:

Hey mate,

Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. These processes are called chemical reactions and, in general, are not reversible except by further chemical reactions.

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Answer 2

Answer:

chemical change:-

it is a change in state of matter that can not be reversed in their pre state.

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