what is defferentiate between physical and chemical change
Answers
**Physical Change:**
A physical change is the change of matter that occurs without changing the chemical composition of matter.
**Chemical Change:**
A chemical change is the change of chemical composition of matter.
**Nature**
**Physical Change:**
Physical changes are usually reversible.
**Chemical Change:**
Chemical changes are usually irreversible.
**Product Formation**
**Physical Change:**
New products are not formed during physical changes.
**Chemical Change:**
New products are formed during chemical changes.
**Energy**
**Physical Change:**
Some physical changes occur when heating/cooling is done.
**Chemical Change:**
Chemical changes always involve absorption or release of energy.
**Chemical Bonds**
**Physical Change:**
Physical changes have no effect on the chemical bonds of molecules of a substance.
**Chemical Change:**
Chemical changes have a direct effect on the chemical bonds of molecules in a substance
A change in which substance does not change is known as physical change it is otherwise known as reversible change.
A change in which a new substance are obtained is known as chemical change . It is irreversible .e.g. burning of paper.....
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