Fog is formed when warm water vapor comes into contact with cold temperatures. By heating up the inside of the bottle with hot water, you are creating warm vapor inside the bottle. [2] X Research source
Some people use jars instead of bottles for this experiment. If you’re using a jar, it’s a good idea to set the ice in a strainer, which you should be able to find at a grocery store. The strainer’s circular shape makes it fit more easily over a jar. [3] X Research source A strainer may not fit easily over the smaller opening in, say, an empty soda bottle. A plastic bag, which is more soft and flexible, can sink slightly into the bottle. This will cover the opening completely. Use a plastic bag if you’re using a bottle.
Now, the air inside the bottle is warm. When it’s exposed to the cool temperatures caused by the ice cubes, fog will form inside the bottle. [5] X Research source
A strainer should fit fairly easily over a jar. However, a plastic bag may need to be secured. If your bag slips off the bottle, try to secure it with a few pieces of duct tape.
If you’re younger than 18, you’ll have to have an adult purchase dry ice for you. In general, it’s a good idea to have adult supervision when using dry ice as the substance can be dangerous when handled improperly.
A plastic bottle. Any bottle, like an empty soda or water bottle, will work. Avoid using a jar when using dry ice, as you’ll need a smaller opening for the experiment to be effective. Thick gloves and tongs. Dry ice is very cold and can cause severe burns if handled by bare hands. A hammer to break the dry ice into chunks.
Be careful when playing with your bottle. You do not want to accidentally spill or drop it. It’s a good idea to keep protective gloves on when squeezing the bottle. If the water gets too cold, you can pour the bottle’s contents down the sink. Then, add warm water and repeat the process. Never cover your bottle. If dry ice is put in a sealed container, gas will build up until the container explodes.
The vapor from dry ice tends to sink and settle close to the floor, which can be dangerous for small children or pets. This is less of a problem in well-ventilated areas.
Store dry ice in an insulated container that is not completely airtight. As stated previously, an airtight container will cause dry ice to explode. [10] X Research source Do not store dry ice in a freezer or fridge. This will result in the thermostat in your freezer/fridge dropping to the point the fridge turns off. [11] X Research source Keep your dry ice in a well-ventilated space.
Remove any items, like rings, from the burned area. If you have any blisters, avoid breaking them. In the event they break on their own, clean the area with water and mild soap. [13] X Trustworthy Source Mayo Clinic Educational website from one of the world’s leading hospitals Go to source Add some aloe vera gel to help keep the area from drying out. You can try an over-the-counter pain medication, like ibuprofen, if the pain is severe. [14] X Trustworthy Source Mayo Clinic Educational website from one of the world’s leading hospitals Go to source