Today’s Agenda….10/3 Bellringer: True or False Review Physical Changes

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Presentation transcript:

Today’s Agenda….10/3 Bellringer: True or False Review Physical Changes Notes on Chemical Changes Physical and Chemical Changes Checklist

Today’s Goals… I can classify changes in substances as physical or chemical.

Chemical Changes Study Pack #4

Observing a Chemical Change BEFORE CHANGE AFTER ADDING BAKING SODA TO VINEGAR

Chemical Changes Change in appearance and composition Result in a NEW substance Not easily reversed

Examples: Wood burning Iron rusting Silver tarnishing Cooking/Baking Foods spoiling Leaves changing colors in the fall

Signs of a Chemical Change How do you know a change has occurred? Gas bubbles Producing heat, light, smoke Change in color Change in odor Sound