they are both changes and both are matter
Physical changes are reversible changes, such as change of state (boiling, melting etc), chemical changes are when something undergoes a reaction changing it's chemical makeup.
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 involves both chemical and physical change on earths surface
Chemical and physical changes are part of methods applied in science.
Changes in humidity are physical, NOT chemical, changes.
well you know.......... why dont u tell me
They both are different kinds of air.
They are chemical changes, they involve electrons.
They are chemical changes, they involve electrons.
Physical changes are reversible changes, such as change of state (boiling, melting etc), chemical changes are when something undergoes a reaction changing it's chemical makeup.
the difference between a physical change and a chemical change is that a physical change is usually reversible whilst a chemical change is not reversible.
the difference between a physical change and a chemical change is that a physical change is usually reversible whilst a chemical change is not reversible.
Physical changes are melting and boiling in this case; fire is a combustion, a chemical change.
You can tell the difference by knowing that a physical property changes shape and that a chemical property changes the substance.
There are no physical changes. there are only chemical changes.
A physical change changes the physical properties of an element like color where chemical changes change the chemical properties of an element and usually can't be undone.
A physical change is when a substance changes, but still keeps its identity. When a chemical change occurs, the substance changes its identity.