If you fill a balloon with warm air and then place it in a freezer for an hour, several things are likely to happen due to the change in temperature and pressure:
Contraction of Air: As the balloon cools down, the air inside it will lose heat and contract. The volume of the air will decrease, causing the balloon to deflate to some extent.
Decrease in Pressure: The decrease in temperature will also lead to a reduction in air pressure inside the balloon. The pressure of the warm air inside the balloon was higher than the colder air in the freezer, but as the temperature drops, the pressure inside the balloon will decrease.
Balloon Becomes Brittle: Some balloons might become more brittle when exposed to very cold temperatures. This could make them more susceptible to bursting or breaking if handled roughly.
Potential Balloon Burst: Depending on the type and quality of the balloon, there is a risk that it might burst. As the air inside the balloon contracts, the pressure difference between the air inside and the cold air outside may become too great, leading to the balloon popping or bursting.
It's worth noting that the specific outcome can vary depending on the type and thickness of the balloon material and the initial temperature of the warm air you used to inflate the balloon. For safety reasons, it's generally not recommended to put balloons in a freezer, as there is a risk of bursting and creating a mess.
If you're looking to demonstrate the effects of temperature on gases, it's better to use other safer and controlled methods, like using a container with a lid and observing pressure changes as the temperature changes. Always handle balloons and gases with caution to prevent accidents.