This is what happens when you pour liquid nitrogen on a balloon. The balloon shrinks almost instantly because the gas inside it gets extremely cold and contracts. Liquid nitrogen has a temperature of about -196°C, and when it touches the balloon, it rapidly cools down the air inside. Cold air takes up much less space than warm air, so the balloon appears to deflate. But the balloon isn't actually popping or leaking. Once it warms back up to room temperature, the air inside expands again and the