Question
Write the differences between physical and chemical changes.
✓
Answer
Differences between physical and chemical changes are:
|
S.No.
|
Physical change
|
Chemical change
|
|
$i.$
|
No new substance is formed.
|
New substance is formed.
|
|
$ii.$
|
It is a temporary change.
|
It is a permanent change.
|
|
$iii.$
|
Physical change is easily reversible.
|
Chemical change is irreversible.
|
|
$iv$
|
Very little energy (heat, etc) is absorbed or given out in a physical change.
|
A lot of energy (in the form of heat, light, sound etc) is absorbed or given out in a chemical change.
|
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