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Chemistry Demonstration Thoughts?
I need to come up with my own demonstration in chemistry. It is supposed to be based upon solutions, the transitions between solid, liquid, and gas forms, or something involving pressure, volume, and temperature relationships. Can you help me out maybe? It needs to be preformed in front of the classroom. i just cant think of a good demonstration. help please?
2 Answers
- promiseLv 61 decade agoFavorite Answer
You could get a fairly large block of ice and put a thin metal wire across the top of it. Beforehand, attach relatively light weights to both sides of the wire. When you do this experiment, the wire will essentially cut through the ice. This is because H2O is the exception to the general phase change trend, in that when the pressure is increased (as it will be under the wire), ice changes to the liquid phase.
- Gary HLv 71 decade ago
You could do a demonstration of the volume of reaction products by putting some water in an empty soda/water bottle, add some baking soda, and place a balloon over the opening. With a little experimentation, you should be able to come up with a reaction that will fill the balloon pretty full. good luck