List three difference between a physical change and a chemical change
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A physical change in a substance doesn't change what the substance is. In a chemical change where there is a chemical reaction, a new substance is formed and energy is either given off or absorbed
ArpitSaxena:
Physical change is a temporary; they are easily reversible. As against this, the chemical change is permanent in nature, i.e. they cannot be reversed, even by reversing conditions.
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physical:these are the chances which happen due to changes in outside appearance, state
chemical:change in smell, taste etc
physical:these are reversible
chemical:these are irreversible
physical change:melting of ice
chemical change :H2+O2----H2O
chemical:change in smell, taste etc
physical:these are reversible
chemical:these are irreversible
physical change:melting of ice
chemical change :H2+O2----H2O
H2o also can be retreat ed
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