Question

List one observation that determines that a chemical reaction has taken place along with corresponding balanced chemical equation for the justification of the observation.
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Answer 1

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• A chemical reaction takes place when one or more substances are changed into a new substance.
• This means that the chemical composition of a substance changes.
• It is important to remember that matter is neither created nor destroyed in a chemical reaction.
• Instead, a substance is simply rearranged to form another one.

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Answer 2

Answer

A chemical reaction takes place when one or more substances are changed into a new substance.

This means that the chemical composition of a substance changes.

It is important to remember that matter is neither created nor destroyed in a chemical reaction.

Instead, a substance is simply rearranged to form another one.