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First physical change because it converts from liquid to gas due to the release of pressure
and when the stove is lighted chemical change occurs where the hydrocarbon turns in to carbon dioxide and water vapor

hope this helps

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It's is a physical change becuz LPG is a gas and its is compressed to turn into liquid,so is physical change.But when LPG gas burns on stove its a chemical change as combustion is taking place.
If it helped please say thanx.
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