A bag of chips has air in it to prevent the product from damage, but when I leave a bag open, the chips go stale. What is different about the air? -
![TAG on X: "On the plane to Amsterdam.. purchased this small bag of crisps from a brand I've never heard of. Guess the price (in sterling). https://t.co/WbmED4XGj1" / X TAG on X: "On the plane to Amsterdam.. purchased this small bag of crisps from a brand I've never heard of. Guess the price (in sterling). https://t.co/WbmED4XGj1" / X](https://pbs.twimg.com/media/C229oXmW8AIoxG-.jpg:large)
TAG on X: "On the plane to Amsterdam.. purchased this small bag of crisps from a brand I've never heard of. Guess the price (in sterling). https://t.co/WbmED4XGj1" / X
![Chip bag puffed up because of lower atmospheric pressure at high altitude (38,000 feet on airline Stock Photo - Alamy Chip bag puffed up because of lower atmospheric pressure at high altitude (38,000 feet on airline Stock Photo - Alamy](https://c8.alamy.com/comp/C5TBDX/chip-bag-puffed-up-because-of-lower-atmospheric-pressure-at-high-altitude-C5TBDX.jpg)
Chip bag puffed up because of lower atmospheric pressure at high altitude (38,000 feet on airline Stock Photo - Alamy
![Crisp packet expanding during a flight to Germany due to the change in air pressure in the cabin : r/mildlyinteresting Crisp packet expanding during a flight to Germany due to the change in air pressure in the cabin : r/mildlyinteresting](https://i.redd.it/p9axvj6q24i21.jpg)
Crisp packet expanding during a flight to Germany due to the change in air pressure in the cabin : r/mildlyinteresting
![I bought a bag of crisps (potato chips) at the airport. They inflated in the airplane at cruising altitude due to the drop in air pressure. : r/mildlyinteresting I bought a bag of crisps (potato chips) at the airport. They inflated in the airplane at cruising altitude due to the drop in air pressure. : r/mildlyinteresting](https://external-preview.redd.it/dW8XYnKJtXFOSbCjixNFxAd_b5yEAmdHzqm32CNcGBY.jpg?auto=webp&s=430cfdc2d8bc7663858e8a6504e2ce96aaefe215)
I bought a bag of crisps (potato chips) at the airport. They inflated in the airplane at cruising altitude due to the drop in air pressure. : r/mildlyinteresting
![I packed a bag of chips for a snack on the airplane. When I took it out mid-flight, the bag of chips had blown up like a balloon. : r/mildlyinteresting I packed a bag of chips for a snack on the airplane. When I took it out mid-flight, the bag of chips had blown up like a balloon. : r/mildlyinteresting](https://i.redd.it/nfemcrbmjh211.jpg)
I packed a bag of chips for a snack on the airplane. When I took it out mid-flight, the bag of chips had blown up like a balloon. : r/mildlyinteresting
![How does your favourite stack up? MailOnline reveals how much air is in popular crisp packets | Daily Mail Online How does your favourite stack up? MailOnline reveals how much air is in popular crisp packets | Daily Mail Online](https://i.dailymail.co.uk/1s/2023/07/13/15/73179497-0-image-a-78_1689257284314.jpg)