70 likes | 177 Views
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.
E N D
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
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