Physical Chemical Changes Is melted butter still butter
![Physical & Chemical Changes • Is melted butter still butter? • Is soured milk Physical & Chemical Changes • Is melted butter still butter? • Is soured milk](https://slidetodoc.com/presentation_image_h2/6edf047e4f1cb4d81d0d31c94ee070fd/image-1.jpg)
Physical & Chemical Changes • Is melted butter still butter? • Is soured milk still milk? • Are the ashes from a fire made of the same “stuff” as wood? 7 th Grade Brandy Butcher
![What is a physical change? �Change that affects one or more physical properties of What is a physical change? �Change that affects one or more physical properties of](http://slidetodoc.com/presentation_image_h2/6edf047e4f1cb4d81d0d31c94ee070fd/image-2.jpg)
What is a physical change? �Change that affects one or more physical properties of a substance �A new substance is not formed �The substance keeps its identity (name)
![Examples of Physical Change �Any state change ◦ Melting ◦ Freezing ◦ Evaporating �Dissolving Examples of Physical Change �Any state change ◦ Melting ◦ Freezing ◦ Evaporating �Dissolving](http://slidetodoc.com/presentation_image_h2/6edf047e4f1cb4d81d0d31c94ee070fd/image-3.jpg)
Examples of Physical Change �Any state change ◦ Melting ◦ Freezing ◦ Evaporating �Dissolving �Cutting �Bending
![Examples of Physical Changes in Nature �Water Cycle �Erosion Examples of Physical Changes in Nature �Water Cycle �Erosion](http://slidetodoc.com/presentation_image_h2/6edf047e4f1cb4d81d0d31c94ee070fd/image-4.jpg)
Examples of Physical Changes in Nature �Water Cycle �Erosion
![Can you think of any examples? Can you think of any examples?](http://slidetodoc.com/presentation_image_h2/6edf047e4f1cb4d81d0d31c94ee070fd/image-5.jpg)
Can you think of any examples?
![What is a chemical change? �One or more substances are changed into a new What is a chemical change? �One or more substances are changed into a new](http://slidetodoc.com/presentation_image_h2/6edf047e4f1cb4d81d0d31c94ee070fd/image-6.jpg)
What is a chemical change? �One or more substances are changed into a new substance �New and different properties �New identity (name)
![Examples of a Chemical Change �Cooking �Burning �Rusting Examples of a Chemical Change �Cooking �Burning �Rusting](http://slidetodoc.com/presentation_image_h2/6edf047e4f1cb4d81d0d31c94ee070fd/image-7.jpg)
Examples of a Chemical Change �Cooking �Burning �Rusting
![Examples of Chemical Changes in Nature �Carbon Cycle �Nitrogen Cycle �Chemical Weathering Examples of Chemical Changes in Nature �Carbon Cycle �Nitrogen Cycle �Chemical Weathering](http://slidetodoc.com/presentation_image_h2/6edf047e4f1cb4d81d0d31c94ee070fd/image-8.jpg)
Examples of Chemical Changes in Nature �Carbon Cycle �Nitrogen Cycle �Chemical Weathering
![Can you think of any examples? Can you think of any examples?](http://slidetodoc.com/presentation_image_h2/6edf047e4f1cb4d81d0d31c94ee070fd/image-9.jpg)
Can you think of any examples?
![What are the signs a chemical change is happening? �Change in color �Change in What are the signs a chemical change is happening? �Change in color �Change in](http://slidetodoc.com/presentation_image_h2/6edf047e4f1cb4d81d0d31c94ee070fd/image-10.jpg)
What are the signs a chemical change is happening? �Change in color �Change in odor �Production of heat �Production of fizzing, foam, bubbles �Production of sound �Production of light
![What signs do this changes demonstrate? Change in odor and color at e H What signs do this changes demonstrate? Change in odor and color at e H](http://slidetodoc.com/presentation_image_h2/6edf047e4f1cb4d81d0d31c94ee070fd/image-11.jpg)
What signs do this changes demonstrate? Change in odor and color at e H nd/ u o S t/ Ligh Change in odor and color Sou / t h Lig eat H / nd Change in color
![Physical or Chemical Change? Frying an egg? Rusting of Iron Shredding Paper Melting of Physical or Chemical Change? Frying an egg? Rusting of Iron Shredding Paper Melting of](http://slidetodoc.com/presentation_image_h2/6edf047e4f1cb4d81d0d31c94ee070fd/image-12.jpg)
Physical or Chemical Change? Frying an egg? Rusting of Iron Shredding Paper Melting of ice cream
![Incorrect. Try again! Incorrect. Try again!](http://slidetodoc.com/presentation_image_h2/6edf047e4f1cb4d81d0d31c94ee070fd/image-13.jpg)
Incorrect. Try again!
![Correct! Try the next one! Correct! Try the next one!](http://slidetodoc.com/presentation_image_h2/6edf047e4f1cb4d81d0d31c94ee070fd/image-14.jpg)
Correct! Try the next one!
![Physical or Chemical Change? �Souring �Physical Milk? or Chemical Physical or Chemical Change? �Souring �Physical Milk? or Chemical](http://slidetodoc.com/presentation_image_h2/6edf047e4f1cb4d81d0d31c94ee070fd/image-15.jpg)
Physical or Chemical Change? �Souring �Physical Milk? or Chemical
![Incorrect. Try again! Incorrect. Try again!](http://slidetodoc.com/presentation_image_h2/6edf047e4f1cb4d81d0d31c94ee070fd/image-16.jpg)
Incorrect. Try again!
![Correct! Try the next one! Correct! Try the next one!](http://slidetodoc.com/presentation_image_h2/6edf047e4f1cb4d81d0d31c94ee070fd/image-17.jpg)
Correct! Try the next one!
![Physical or Chemical Change? �Shredding �Physical paper? or Chemical Physical or Chemical Change? �Shredding �Physical paper? or Chemical](http://slidetodoc.com/presentation_image_h2/6edf047e4f1cb4d81d0d31c94ee070fd/image-18.jpg)
Physical or Chemical Change? �Shredding �Physical paper? or Chemical
![Incorrect. Try again! Incorrect. Try again!](http://slidetodoc.com/presentation_image_h2/6edf047e4f1cb4d81d0d31c94ee070fd/image-19.jpg)
Incorrect. Try again!
![Correct! Correct!](http://slidetodoc.com/presentation_image_h2/6edf047e4f1cb4d81d0d31c94ee070fd/image-20.jpg)
Correct!
![Law of conservation of mass �During a chemical change, matter is neither created nor Law of conservation of mass �During a chemical change, matter is neither created nor](http://slidetodoc.com/presentation_image_h2/6edf047e4f1cb4d81d0d31c94ee070fd/image-21.jpg)
Law of conservation of mass �During a chemical change, matter is neither created nor destroyed. It undergoes physical and chemical changes. This is known as the law of conservation of mass. �Mass of reactants=Mass of products. http: //www. youtube. com/watch? v=xql 1 Tb 9 k. Eik http: //www. youtube. com/watch? v=ww. JJK 4 kor. Rg
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