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What is the differences of a chemical change and a physical change?
Wiki User
∙ 15y ago
Chemical changes occur when the elements, their valences, and their amounts change. 4H + O2 => 2H2O is a chemical change because the valences change from unfilled to shared.
Physical changes occur when the material phase changes. In fact, in 4H + O2 => 2H2O we also have a physical change...from gas to liquid water (in most cases). NOTE: That there was a chemical change here is incidental, the phase change is the physical change.
Duane Anymouse
Jarrod Ruecker
Wiki User
∙ 6y agoA chemical change involve the molecular modification of reactants.
After a physical change the molecule remain unchanged.
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Is Cleaning a painted surface with acid a chemical or physical change?
Chemical broooooooooooooooo niga
Is peeling an apple a physical or chemical change?
it is a chemical change
Is crushing charcoal into powder a physical or chemical change?
Chemical I think
Is a wet handkerchief is physical or chemical change?
physical as the chemical structure does not change.
Is ripping your jeans chemical or physical change?
Physical - there are no chemicals involved
Differences between chemical and physical change?
A chemical change results in a change in chemical composition, while a physical change does not.
What is the differences between physical and chemical change in tabular form?
physical change are reversable
What is the differences between a physical and chemical change in a candle?
The physical change will keep the atoms the same not moving but the chemical change will make it move around with energy.
Write 3 differences between chemical and physical change?
Okay now here goes in a physical change no chemical reaction takes place. in chemical change chemical reactions take place. A physical change is reversible but a chemical change is not.In a physical change no new substance is formed(A+B=B) in a chemical change new substances are formed(A+B=C)
What are the differences betwen physical and chemical changes in terms of what happenes to molecules?
During a chemical change the molecule is transformed; during a physical change the molecule is not transformed.
Differences between physical and chemical changes?
A physical change is a change that does not change the chemical makeup of the substance. This can be crushing, tearing, or a phase change for example. A chemical change changes the chemical makeup of the substance. Some examples of this are rusting, combustion, or digestion.
What is the differences between chemical and physical change?
A chemical change involves a change in a substance's chemical properties (characteristics that describe how it interacts with other substances).A physical change involves a change in a substance's physical properties(characteristics that describe certain features one can see with their 5 senses).
What is the differences between physical and chemical changes in relation to fire services?
Physical changes are melting and boiling in this case; fire is a combustion, a chemical change.
Is Cleaning a painted surface with acid a chemical or physical change?
Chemical broooooooooooooooo niga
Is peeling an apple a physical or chemical change?
it is a chemical change
Is crushing charcoal into powder a physical or chemical change?
Chemical I think
Is a wet handkerchief is physical or chemical change?
physical as the chemical structure does not change.
