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Everything I've read points to physical, because most physical changes are only changes in the state of matter of an object, or something similar to that. In a chemical change, reactions occur that create new substances, and so they are more difficult to reverse.
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∙ 13y ago
Wiki User
∙ 12y agophysical change because it's like when u put ice in water , it melts , but u can re - freeze it to form back the ice that melted .... it's like getting the object back . u can't do this to a chemical change ... can u make a baked cake come back to cake mix , liek u started ? no u can't . so u can't get chemical change back to the original object ... altough some chemical changes can be back .
i hope this helped u !!! thxs bye
good lck
Wiki User
∙ 12y agoNo. A chemical change alters the chemical make-up of a substance. A physical change does not. A chemical change such as the following combustion reaction:
CH4(s) +O2(g)= 2H2O(g) +CO2(g)
changes the original chemical species (CH4 and O2) into new chemical species (H2O and CO2). Taking the H2O, you could perform physical changes on it by mixing it with NaCl(s), cooling it to H2O(l) or H2O(s). It is still H2O, though. A physical change cannot alter the chemical identity of a substance. In order to get CH4 and O2 back, the chemical reaction would have to be completed in reverse (that would never happen in this case. don't try.).
Wiki User
∙ 12y agoMaybe, depending on exactly what you mean by that.
A chemical change can only be reversed by another chemical change.
However, some equilibria can be shifted by physical changes. For example, if one molecule of gas breaks into two molecules of gas as a chemical change, increasing the pressure may cause some of the products to recombine back into the reactant.
Wiki User
∙ 13y agono only the composition of water and carbon dioxide together can elliminate chemical changes.
Wiki User
∙ 13y agoTechnically no..... however; the application of "extreme" physical forces can cause chemical change such as applying exiremely high pressure to coal to cause the formation of diamond.
Wiki User
∙ 13y agoniether one
PRO Z GAMING
Wiki User
∙ 8y agoNO
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Chemical changes can be reserved by physical change?
No, chemical changes can only be reversed by chemical means, not by physical means.
How is sour milk a chemical change?
milk going sour is a chemical change because it can't be reversed. Most physical changes can be reversed for example snow melting is a physical change because it can freeze again.
What is the difference between physical and chemical changes of matter?
Usually a physical change can be reversed such as fruit rotting. where as chemical change is very hard to reverse such as rust
Physical change copper chloride aluminum foil experiment?
It's a chemical change. The aluminum foil is rusting, which cannot be undone, meaning that this is a chemical change, not a physical. Physical changes can be reversed.
What are the differences between the physical and chemical?
in changes. Physical changes can be reversed. E.g. if you were to melt a block of ice, and then freeze it again, it would to some degree be reversed. This is a physical change. However, if you were to burn a peace of toast, the change would be chemical. Once the toast is burnt you cant get it back.
Chemical changes can be reserved by physical change?
No, chemical changes can only be reversed by chemical means, not by physical means.
Is melting ice a chemical or physical change explain?
It is a physical change because when you have a chemical change it changes the properties and makes it into a new thing, and it can't be reversed. Physical changes are usually just changes of states (solid, liquid, gas) and a physical change can be reversed.
What is the difference between chemical and physical changes?
A chemical change is when something cannot be reversed and often a precipitate (solid) is formed. While a physical change can be reversed e.g bending a piece of wire.
How is sour milk a chemical change?
milk going sour is a chemical change because it can't be reversed. Most physical changes can be reversed for example snow melting is a physical change because it can freeze again.
Explain Why physical changes can be reversed but chemical changes cannot?
Physical changes are generally easy to reverse because NO ENERGY is produced by the substance.A Chemical change cannot be reversed because ENERGY is produced by the substance forming a new substance.
What is the difference between physical and chemical changes of matter?
Usually a physical change can be reversed such as fruit rotting. where as chemical change is very hard to reverse such as rust
Physical change copper chloride aluminum foil experiment?
It's a chemical change. The aluminum foil is rusting, which cannot be undone, meaning that this is a chemical change, not a physical. Physical changes can be reversed.
What are the differences between the physical and chemical?
in changes. Physical changes can be reversed. E.g. if you were to melt a block of ice, and then freeze it again, it would to some degree be reversed. This is a physical change. However, if you were to burn a peace of toast, the change would be chemical. Once the toast is burnt you cant get it back.
Why physical changes can easily be reversed but why chemical cannot?
Physical changes are generally easy to reverse because NO ENERGY is produced by the substance.A Chemical change cannot be reversed because ENERGY is produced by the substance forming a new substance.
Why physical change can easily be reversed but chemical change cannot?
Physical changes are generally easy to reverse because NO ENERGY is produced by the substance.A Chemical change cannot be reversed because ENERGY is produced by the substance forming a new substance.
What are three differences between physical and chemical changes?
(i) Physical change does not result in formation of new substances Chemical change result in formation of new substances (ii) Physical change is a temporary change Chemical change is a permanent change (iii) Physical change is reversible Chemical change cannot be reversed back (iv) e.g of Physical change-Dissolving of sugar in water to obtain a sugar solution e.g of Chemical change-Burning of sodium in chloride
What is the difference between physically and chemical changes?
A chemical change is when something cannot be reversed and often a precipitate (solid) is formed. While a physical change can be reversed e.g bending a piece of wire.
