Answer: 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.

nitrogen gas

Nitrogen is an inert gas, and is used during the packaging process to exclude and remove air and in particular, oxygen. Oxygen is highly-reactive, so this means it likes to combine with other molecules, which results in food spoiling or losing its’ freshness.

Carbon Dioxide is most commonly used to prevent the growth of mold and bacteria and is used to achieve the longer shelf life. The balance of how much Carbon Dioxide, Nitrogen and Oxygen to leave in a package is a unique recipe that should be customized according to the products being preserved.

The sound is caused by the pops and clicks as creases in the packaging material are pulled apart, and there is very little a theatergoer can do to decrease the loudness of those sounds, according to Eric Kramer, a physicist from Simon’s Rock College of Bard in Great Barrington, Mass.

According to a leading scientist, manufacturers deliberately make the packaging loud because the crisps taste fresher if you can hear the rustle. “Whenever we hear the pop of the champagne cork, or the rattle of the crisp packet, certain expectations automatically come to mind.”

For chips, crisps, tortillas and etc, press them against the roof of your mouth using your tongue. The softness of the tongue will help to suppress the crunch noise. Then eat normally. Those foods shapes are specially engineered to do the crunch sound, so that’s a quiet way to get rid of the shape first, then eating.

Or think of your own ways to eat quietly and give them fair trial for the rest of the month. The point is to take the idea of eating light and shift it from diet to consciousness….Eating Quietly

1. Cut out the alcohol.
2. Slow down.
3. Close the eyes.
4. Eat earlier.
5. No snacking.
6. Quiet down, literally.
7. Vegetarian.
8. Stay seated.

In many countries of the world, purposefully making noise while eating or drinking is considered to be bad manners. However, as we’ve seen before, slurping audibly has traditionally been considered a standard model of behavior in Japan when eating noodle dishes such as ramen and especially buckwheat soba noodles.