what is the difference between chemical and physical change

chemical changes are those which cannot be reversed and these changes are permanent.for example when we burn a magnesium ribbon it turns into magnesium oxide and this cannot be reversed whereas phsical changes are those which can be reversed.

hope you understood friend......

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CHANGES THAT ARE TEMPORARY IN NATURE ARE CALLED TEMPORARY CHANGES.FOR EXAMPLE, HEATING A MAGNESIUM RIBBON IN AIR IS A PHYSICAL CHANGE.CHANGES THAT ARE PERMANENT IN NATURE ARE CALLED CHEMICAL CHANGES. FOR EXAMPLE , BURNING OF PAPER IS A CHEMICAL CHANGE.

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CHANGES THAT ARE TEMPORARY IN NATURE ARE CALLED TEMPORARY CHANGES.FOR EXAMPLE, HEATING A MAGNESIUM RIBBON IN AIR IS A PHYSICAL CHANGE.CHANGES THAT ARE PERMANENT IN NATURE ARE CALLED CHEMICAL CHANGES. FOR EXAMPLE , BURNING OF PAPER IS A CHEMICAL CHANGE.

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Chemical changes are the permanent changes for e.g. burning of a wood and a paper.

Physical changes are the temporary changes for e.g. change from ice to water to ice.

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CHEMICAL CHANGES ARE THE CHANGES WHICH ARE NOT REVERSIBLE .
PHYSICAL CHANGES ARE THE CHANGES WHICH ARE REVERSIBLE.
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PHYSICAL CHANGES ARE TEMPORARY CHANGES, WHILE PHYSICAL CHANGES ARE PERMANENT CHANGES.
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a change having some specific property of matter without any change in its composition of its molecules is physical change and chemical change refers a change having specific property by bringing a change in its molecular composition and in its state
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Physical change is a change which can be changed to it's first form wears chemical change cannot be converted into it's first form . EXAMPLE : Melted ice can again be converted into ice wears rusting of iron cannot be reconverted into iron .
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