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Physical and Chemical Changes

Physical and Chemical Changes. What is a Physical Change?. A physical change alters the form of a substance, but does not change it to another substance. Example: Making Orange Juice. What is a Chemical Change?.

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Physical and Chemical Changes

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  1. Physical and Chemical Changes

  2. What is a Physical Change? • A physical change alters the form of a substance, but does not change it to another substance. Example: Making Orange Juice

  3. What is a Chemical Change? • When a substance undergoes a chemical change, it is changed into a different substance with different properties. Example: Baking a Cake

  4. 5 Signs of a Chemical Change • Color Change • Precipitation

  5. Precipitation • Precipitation – the solid that forms from a solution during a chemical reaction. • It looks like a cloudy solid in an otherwise clear solution.

  6. 5 Signs of a Chemical Change • Gas Production • Temperature Change

  7. 5 Signs of a Chemical Change • Changes in Characteristic Properties (odor, light given off)

  8. Chemical or Physical Change? • Cutting paper? • Physical

  9. Chemical or Physical Change? • Ice melting? • Physical

  10. Chemical or Physical Change? • Toast burning? • Chemical

  11. Chemical or Physical Change? • Rocket fuel burning? • Chemical

  12. Chemical or Physical Change? • Sawing wood? • Physical

  13. Chemical or Physical Change? • Metal rusting? • Chemical

  14. Chemical or Physical Change? • Disappearing puddle? • Physical

  15. Chemical or Physical Change? • Candle burning? • Chemical

  16. Chemical or Physical Change? • Dry ice? • Physical

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