URGENT: Need Science project involving Dry Ice

[SeanTheMacMan]

Could anyone give me an idea about a science project with Dry Ice I can use it because my mom can get it from work really easy I need this really soon like 10-7 Thanx


Sean Brackeen
Age 12
San Diego,CA

[Mad Scientist]

[url]http://www.all-science-fair-projects.com/project869_38.html[/url]


See if any of these suit your fancy! They are quite simple, but can be modified to test various hypotheses.

[Archenemy550]

you could test maximum pressure point of things like: Plastic Soda Bottles, PVC, cans, etc.. etc..

However there is an obvious danger there. once you do find the maximum alloud pressure you have high velocity fragments.

But under supervision, you could make a small containment box, and use a digital pressure gauge. I think that would be pretty cool..... in all honesty, you dont even need a gauge. You can use equations, and the material substance to find the "bursting" point.

[wisteria]

Good Idea mad and arch; What makes dried Ice? or what contains Dried Ice? What is it used for?, ect...

[Mad Scientist]

Hi Wisteria!

Nice to hear from you! You've been busy on the forums eh? That's wonderful - it's great having folks like Arch and yourself around...kinda makes my day whenever I see you post something :P

To answer your question, dry ice is made of frozen carbon dioxide. To freeze it, you need special equipment that is capable of chilling gaseous carbon dioxide to at least 100 degrees below zero. Dry ice doesn't melt like regular ice. It evaporates from solid directly to gas. This process is known as sublimation. If you've purchased takeaway ice cream tubs, sometimes, they pack the ice cream with some dry ice. You'll see mist coming out of your paperbag when that happens. Hope that answers your question!

[brainygirl]

Hi,

You can try this idea,

Dry ice is the solid form of carbon dioxide. You can use dry ice to freeze bubbles solid so that you can pick them up and examine them closely. You can use this project to demonstrate several scientific principles, such as density, interference, semipermeability, and diffusion.

Materials


Bubble Solution (from the store or make your own)
Dry Ice
Gloves (for handling the dry ice)
Aquarium or Box
Procedure


Using gloves to protect your hands, place a chunk of dry ice in the bottom of an aquarium or box (aquarium is nice because its sides are clear).
Allow about 5 minutes for carbon dioxide gas to accumulate in the container.
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The bubbles will fall until they reach the layer of carbon dioxide. They will hover at the interface between air and carbon dioxide. The bubbles will start to sink as the bubbles cool and the carbon dioxide replaces some of the air within them. Bubbles that come into contact with the dry ice chunk or fall into the cold layer at the bottom of the container will freeze! You can pick them up for closer examination (no gloves needed). The bubbles will thaw and eventually pop as they warm.
As the bubbles age, their color bands will change and they will become more transparent. The bubble liquid is light, but it is still affected by gravity and is pulled to the bottom of a bubble. Eventually, the film at the top of a bubble becomes so thin that it will open and the bubble will pop.
Explanation

Carbon dioxide (CO2) is heavier than most of the other gases present in air (normal air is mostly nitrogen, N2, and oxygen, O2), so most of the carbon dioxide will settle to the bottom of the aquarium. Bubbles filled with air will float on top of the heavier carbon dioxide. Here's a tutorial for calculating molecular mass, just in case you want to prove this for yourself!

Notes

Adult supervision is recommended for this project. Dry ice is cold enough to give frostbite, so you need to wear protective gloves when handling it. Also, be aware that extra carbon dioxide is added to the air as dry ice vaporizes. Carbon dioxide is naturally present in air, but under some circumstances, the extra amount can present a health hazard.

If u need more info you can check out this site www. chemistry.about.com

I tried this experiment it was pretty

Good Luck!

[Mad Scientist]

Now that's a fantastic suggestion Marjorie. Thank you very much indeed for sharing that with us!

[sciencefreak]

Hey sean. I see u've got some wonderful ideas for your dry ice experiment. But be very careful. Dry ice can be dangerous. Never touch it with your bare hands.

[wisteria]

thanks mad... that's a good idea I should try it maybe later... though it is cold it can burn badly

[GeniusDude]

hey everyone,


its amazing how dry ice can be very hot, vere unusual as well, at some point it could be dangerous but it can also be safe if you have a supervisor that knows what he/she is doing. if you need any help, go to google and "specify" dry ice regarding the question you want to ask about it which is your title and
you will find most of the info that you need, that sounds like a very cool and exciting project,, hope you have fun- Enjoy