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A phyical change changes only phyical properities of a substance while a chemical change changes the chemical properties. Chemical Changes are also irreverable while physical changes are reversable.

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A physical change is when there is a change that dose not affect the substance of the changed object(A cookie breaking a part).But a chemical change is when the substance of matter is altered(paper being burned).

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A physical change doesn't change the object's makeup, a chemical change does, it is irreversible

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A chemical change can not be reversed but a physical change can be reversed.

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physical change in a substance doesn't change what the substance is

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A physical change is something that does not change what the substance is made out of and a chemical change does.

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I think the difference is that with physical change you don't change the substance into a new substance and with chemical change you do. ou can not reverse a chemical change like you can a physical change.

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A physical change is when the object changes but can be changed back and a chemical change is when an object changes but cant be changed back.

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A chemical change can't change back to it's original form, physical change can be changed back to the same properties

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The difference is that a physical change can be changed back and a chemical change you cant change it back.

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The difference between a chemical change and a physical change is that a physical change is reversable and its identity stays the same a chemical change changes the substance and is not reversable also its identity changes

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A physical change can be reversed .
A chemical change is reversible by physical means.

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Chemical changes are not reversible. Physical changes are reversible.

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physical change in a substance doesn't change what the substance and irreversible  chemical change a new substance is formed and energy is either given off or absorbed.

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A physical change can be changed back but chemical change cant be changed back. 

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A physical change can be changed back but chemical change cant be changed back. 

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The difference between a physical change and a chemical change is that a chemical change makes it to where the substance physical properties and identity is no longer existing, making a new substance (like burning paper, it's physical properties and identity is now gone). A physical change is different because the physical properties do change but the identity remains the same (boiling water is a example because now the water is hot but it still is water).

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Physical change - can be changed back physically and has the same properties

Chemical change - cant be changed back to its original form no matter what you do and has different properties

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A Physical Change is a change that occurs that can be reversed or the object can still be identified as the same object. For example, ripping a paper or breaking a cookie.
A Chemical Change is a change that is not reversible like burning a log or burning paper. These things, after burned, can no longer be identified as paper or logs.

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a physical change is like chewing gum. even if you chew it, it is still gum, regardless. a chemical change is like a bonfire. when it is over, the wood has turned to ash. you cannot bring back the wood.

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I think the difference is that chemical change is when you make something new and you can't turn it back to what it used to be but with physical change you change it but you can put it back to normal and know what it is

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When you perform a physical change, the result you get can usually be undone or changed back to it's normal state. When a chemical change happens, you can't change back the result to how it was before.

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A physical change is a change in which the substance does not change its state, so in other words it can be reversed. A chemical change can not be reversed, it is when the substance changes its state.

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A physical change is not changing what something is made out of and a chemical change is changing what something is made out of.

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A physical change is something you can change back and a chemical change is something you can' t change back.

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A physical change is a change that you can change back and a chemical change is a change that you can not change back.