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  • Smart Learning for All

  • Topic: Rancidity.

  • Why is a bag of chips half full?

  • Looks like you don't believe me.

  • Open the bag.

  • See I told you.

  • The bag of chips is indeed half full.

  • Why is that so?

  • It is mainly because of a concept called rancidity.

  • When food becomes rancid, it develops an unpleasant smell and taste and it becomes unsafe for consumption.

  • Rancidity generally refers to a condition where the fats and oils present in food get oxidized.

  • Resulting in food spoilage.

  • Since the chips contain fats and oils, they are likely to get rancid.

  • Therefore, to prevent this, nitrogen gas is flushed into bags of chips by manufacturers.

  • But, why nitrogen?

  • Nitrogen does not react with fats and oils.

  • As a result, rancidity does not take place.

  • Moreover, a gas in the bag serves as a cushioning agent and prevents the chips from crumbling.

  • That is why the bag of chips is only filled till half.

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