State 5 Differences between Physical and chemical changes
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physical change-:
only physical change like odour physical state Density volume atc. changed and chemical properties remain unchanged.
no new Substance is formed in a physical change.
very little or no energy in the form of heat light or sound is usually absorbed or given out in a physical change.
it is a temporary change.
the original form of substance can be regained by physical method.
it is reversible..
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chemical change
chemical composition and chemical properties undergo a change.
a new substance is formed in a physical change.
a chemical change is always accompanied by absorption or evaluation and energy.
it is a permanent change.
it is very irreversible.
hope it is helpful!
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