Why bags of chips are flushed with a nirogen gas
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Potato chip bags are not full of air, but of nitrogen gas. This is done to prevent the chips from oxidizing, which is part of what makes them go stale. Oxygen is very reactive, and likes to combine with other molecules whenever it can, causing chemical changes to take place.
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Chips manufacturers usually flush the bags of chips with nitrogen gas so as to prevent oxidation.
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