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A chemical reaction is a process by which one or more substances transform into different substances via a chemical change. Sometimes, chemical reactions exhibit evidence that can be easily observed when they occur. Part A Which changes are evidence of a chemical reaction?

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Answer:

Indication/Proof: Two transparent solutions are combined and form a murky substance, A water beaker is hot to touch when applying detergent powder, Bubble forming applied to acid on chalk.

Not proof: bubbles that form in a pot of boiling water, water condensation.

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