How does a chemical reaction differ from a physical change of state?

Answer 1

a chemical reaction involves different elements or compounds which react to form a product. While physical change is that which can be easily reversed and no new substance can be formed

This is the distinction between chemical and physical change, and their names also serve to clarify it.

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Answer 2

Luna Chen

Chemical change is characterized by the formation of new substances, and the making and breaking of strong chemical bonds.

On the other hand, changes of state, EXCLUDE the formation of new substances, and chemical bonds are largely retained. Both chemical and physical change can be reversible, so reversibility is not a criterion to differentiate....

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Answer 3

Cameron Andrews

A chemical reaction involves the formation of new substances with different chemical properties, while a physical change of state involves a change in the physical form of a substance without altering its chemical composition.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.