Chemical Properties and Changes

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Presentation transcript:

Chemical Properties and Changes

Water to Wine Demo What was happening? Were these physical changes? Were these physical properties?

Chemical Property Characteristic of matter that can only be observed when one substance changes into a different substance It changes its identity! All of the beginning material is gone! Ex: C + O  CO

Chemical Change Occurs when a substance changes into something new How? Heating chemical reaction (key word = reacting) 5 Proofs of a chemical change Bubbles forming Change in energy Unexpected change in color Change in odor Formation of a precipitate

Lab in a Bag