I need an activity that shows difference in compressibility of three states of matter. The activity should include Aim , Material required , Hypothesis , Procedure...
I need an activity that shows difference in compressibility of three states of matter.
The activity should include Aim , Material required , Hypothesis , Procedure , Observation and Conclusion.
I can give you an activity that I used to do years ago when I taught science. In teaching about phases of matter, I always liked to use napthalene, or a moth ball, to demonstrate the different phases when one adds or takes away heat energy. I would place the mothball in a testtube and then get a butane flame torch and start adding heat to the testtube. Students were able to identify a phase change from solid to liquid, and I would have them draw it. Then, I would continue to add heat and from liquid, the napthalene would turn into a gas, and students noticed the vapor. Before the entire substance dissolved, I would quickly flip the testtube over into a small plastic cup filled with room temperature water. The students could see the remaining liquid turned back into a solid with the removal of heat energy. The kids got a kick out of it and it was a good introduction to the topic.
For showing compressibility, you might want to try this. You will need a plastic syringe, preferably one that is fairly large (50 to 100 ccs). Leave the plastic stopper on the end, where a needle would usually be added. You will probably have to keep your finger on the end while you do this, as well. First, insert the plunger with only air inside, to show how much the gas can be compressed; the plunger will go down somewhat. Then put water inside--the liquid will compress less than the gas, but the plunger can be depressed some. Finally, fill with sand; the plunger won't really go down.