Dry Ice Fun
Experiments with dry ice.
I love dry ice. Dry ice is the solid form of Carbon Dioxide. Due to its extremely cold temperature it has many uses and can be used to have a lot of fun at home.
1. Most people know that dry ice will give a distinct "fog" affect. This can be used as a cool non toxic way to add spooky effects to a bowl of
punch for Halloween. As a bonus effect, the carbon dioxide will also slightly carbonate the water or liquid it is in.
2. Get a water cooler jug and fill it about half full with warm water. Now place your dry ice in until you produce a nice fog. The next step requires a tube that will fit snuggly over the mouth of the water jug (Like one from a vacuum cleaner). Once the fog is coming out of the tube, quickly dip the end of the tube into a bowl of dish soap and let a bubble drop off the tube. This bubble can then be popped to show a foggy explosion.
Credit: http://commons.wikimedia.org/wiki/File:Dry_ice_9669_Nevit.jpg 3. In addition to the previous experiment, you can get a tall beaker or tube with a small amount of warm water at the bottom. Put your dry ice in, followed by some more dish soap. Eventually you will get an eruption of tiny bubbles coming out the top. These bubbles can be handled safely and even squeezed to produce more fog.
4. You can also use dry ice to inflate balloons. Have one person open the end of a balloon and another person drop a few pieces of dry ice into the balloon. Tie it off and watch it inflate.
5. One cool property about carbon dioxide is that sound waves travel differently through this gas than through air. You can demonstrate this by inflating a balloon with dry ice and then holding the balloon about a foot away from your ear. Now turn towards a faint sound such as a TV or clock and listen to the difference. Be very careful not to overfill the balloon because if it pops it can cause damage to your ears.
Be safe and have fun!