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How do characteristics properties help you determine whether a chemical change or a physical change has occurred.

User Cedrou
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Chemical changes usually involve the production of energy (which can be in the form of heat, light, sound, etc.) In a physical change, no new substance is formed. A chemical change is always accompanied by one or more new substance(s). Physical change is easily reversible i.e original substance can be recovered.

User Olejnjak
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