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.
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nitrogen
The equipment for breaking crisps typically includes a food processor or a heavy-duty blender, which can crush the crisps into smaller pieces or crumbs. Alternatively, a rolling pin can be used to crush them manually by placing the crisps in a sealed plastic bag and rolling over them. For larger quantities, industrial machinery like a granulator may be used in commercial settings.
The collective noun for a group of crisps is often referred to as a "packet" or "bag" of crisps. While there isn't a widely recognized term specifically for multiple crisps, these terms are commonly used when discussing them in groups.
You remember then crisps called Cheetahs? There's your answer.
The container for crisps is typically a bag made of durable, lightweight materials such as plastic or foil. These bags are designed to keep the crisps fresh and protect them from moisture and air. Some brands may also use rigid containers, like cardboard boxes or plastic tubs, for certain types of crisps. The packaging often features vibrant graphics and branding to attract consumers.
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.
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."