Question

4 다
which types of changes occur during
Chamical. Reaction?
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Answer 1

Answer:

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Explanation:

The chemical reaction produces a new substance with new and different physical and chemical properties. Matter is never destroyed or created in chemical reactions. The particles of one substance are rearranged to form a new substance. The same number of particles that exist before the reaction exist after the reaction

Answer 2

Explanation:

change in smell

change in colour

change in state

precipitation

evolution of gases