Nitrous oxide is a colourless gas. It has 2 nitrogen atoms & one oxygen atom shortened as N2O. Nitrous oxide is typically used for sedation and pain relief by medical doctors & dentists. It has also been misused by people for recreational reasons.
Another use for nitrous oxide gas is as a fuel booster in cars. Nitrous oxide is not flammable at cooler temperatures. However, when super heated the oxygen is broken off and helps combust the cars ordinary petrol and release more power.
The nitrous oxide sold on this site is for cooking uses. It is used as a foaming agent in food and drink, whipping cream, making mousses, infusing flavours into alcohol and lots of other foodcooking uses.