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Science Affairs Chemistry

In order to prevent oxidation of potato chips during storage in sealed bags, chip manufacturers seal the packet in the presence of:

Oxygen

Nitrogen

Hydrogen

Carbon dioxide

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Explanation:

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.