<p>Whenever we buy a packet of chips in the market, it looks heavy. But when opened, it is only half full. Moreover, how do the chips remain crispy even when filled with air?</p><img><p>When we open a puffy chip bag, finding it half empty makes us feel scammed. However, this extra air is not a trick but a scientific necessity to protect your snacks.</p><img><p>Chip bags are filled with nitrogen gas, not oxygen. Nitrogen acts as a cushion during transport, prevents chips from crushing, and keeps them fresh and crispy for long.</p>
