Evidence of Chemical Change: Precipitates form, Unexpected temperature change (Endothermic / Exothermic reaction), Unexpected color change, Sounds or smells produced, Bubbles or gas produced, Smoke, Fire, or light is produced, New substance is created, Evidence of Physical Change: Substance evaporates, Changing state of matter, Substance is absorbed, Dissolving one substance into another, Nothing new is created, Inflating or expanding, Change in shape,

Evidence of a Chemical Reaction

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النمط البصري

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