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Physical and chemical?! Right on!

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15y ago

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Is sleeping a chemical or physical change and why?

Sleeping involve some chemical reactions and physical phenomenons but I suppose that it is exaggerate to consider sleep as a chemical/physical change.


Is a cooked hot dog physical or chemical change?

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Is squeezing a lemon a physical or chemical change?

It's a physical change why are some people f$#@%ing stupid and saying a chemical change??


In a physical change some of the physical properties of the substance may be altered and the chemical composition?

In a physical change, the chemical composition of the substance remains the same, but some physical properties like shape, size, or state may change. This means that the substance can be reversed back to its original state without undergoing a chemical reaction.


Is beating a egg a physical change or chemical?

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Is toasting of bread a physical or chemical change?

Physical ------------------- It is a chemical change because some compounds from bread are thermally decomposed. The reaction is not reversible.


Are all physical changes accompanied by a chemical change?

A physical change is a change in chemical composition. A physical change is a change where chemical composition is not altered. Not all chemical changes are accompanied by a physical change, but some are. The same is true for the reverse.


What is the same between the chemical change and a physical change?

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Is boiling potatoes a chemical or physical change?

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Is cabbage juice and vinegar a chemical or physical change?

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Is hammering gold until it becomes flat a physical change or chemical change?

Pounding a gold coin into a different shape would probably not effect a chemical change. If, however, the pounding produced enough heat to meal the coin, some chemical change could take place.


Is a Toasting a piece of bread a chemical change or physical change?

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