Nitrogen
Because without them, the residual oil of the surface of crisps would react with oxygen from the air and give them a stale flavour.
Bags are filled with nitrogen, either pure or mixed with carbon dioxide, not so much to keep them inflated (that could be done with air), but to displace the oxygen, which would cause the oils to go rancid.Carbon dioxide is also used sometimes,
Nitrogen gas is usually used to fill packets of crisps. This helps to prevent the crisps from becoming stale by reducing the amount of oxygen inside the packet.
The collective noun for crisps is a packet of crisps.
onion
nitrogen
You remember then crisps called Cheetahs? There's your answer.
Nitrogen gas is used to fill bags of crisps to prevent them from getting squashed. Nitrogen is an inert gas that helps maintain the freshness and crunchiness of the crisps by minimizing the effects of oxidation and moisture.
can I take sweets and crisps to Ausrtalia..Sydney
Nitrogen gas is commonly used in crisp packets to help maintain freshness and prevent the crisps from becoming stale. Nitrogen is an inert gas that does not react with the crisps or affect their taste.
The word that is wrong is 'were'The reason that it is wrong is that the subject of the sentence 'A packet of crisps' is singular (it refers to one packetnot the many crisps in the packet) while the verb 'were found' refers to the plural (i.e they were found). As there is only one packet of crisps 'was found' the singular should be used (i.e. it was found). The sentence should therefore read:-"A packet of crisps was found on the bench."
Argon gas is used in crisp packets to displace oxygen, which helps in preserving the crispiness and freshness of the crisps by reducing the risk of oxidation. This contributes to extending the shelf life of the crisps and maintaining their quality.