Dryice Demos

8/11/2019 Dryice Demos

1/27

Fun with Dry Ice!!!

Demonstration by:

Jon WilsonThe University of Mississippi


2/27

History of Carbon Dioxide

Who do we owe credit for Dry Ice?

A Chemist from Belgium named Jan Baptist

van Helmont (1580-1644)discovered CarbonDioxide in the early 1600s.

He was also the first person to use the word

gases when dealing with Carbon Dioxide and

other common gases (example: Oxygen)


3/27

Jan Baptist van Helmont

(1580-1644)


4/27

History of Carbon Dioxide

Carbon Dioxide in the past

It is thought that Carbon Dioxide dominated the

Earths atmosphere 4.5 billion (4,500,000,000)years ago.

Living on Earth during that time would have

been impossible because there was not enough

Oxygen for us to breathe. The atmosphere wassimilar to the current atmosphere on Mars.


5/27

Earths Atmosphere 4.5 billion

years ago?

Mars Venus


6/27

Properties of Dry Ice

Temperature

-109 degrees Fahrenheit (-80 degrees Celsius)

That is 150 degrees colder than it is outside

right now (it is around 41 degrees F in Oxford)

Density

Heavier density than the air around us.

Special Property

Goes directly from a solid to a gas (called

sublimation) under normal temperatures. It

does not leave a puddle of ice like regular ice.


7/27

Common Uses of

Dry Ice(Solid - CO2)By plants for photosynthesis (most

important)

Freezing different things for transportKeeping different things frozen during

transport

Adding carbonation to our sodaFire extinguishers


8/27

Carbon Dioxide vs. Water

CO2 It has a greater density

than Water.

It goes directly from a

solid to a gas under

normal temperatures.

Vital for

photosynthesis inplants.

H20

It has a density less

than Carbon Dioxide.

It goes from a solid to

a liquid to a gas under

normal temperatures.

Everyone needs water

to survive.


9/27

Playing It Safe with Dry Ice


10/27

What Do You Think?

Why does the Ice Cream man use Dry Ice

instead of regular Ice?


11/27

What happened and Why

The ice cream man uses dry ice because

when it melts there is not a puddle of water.

Dry ice turns directly into a gas. This doesnot make a mess or make your ice cream

soggy on summer days.


12/27

What Do You Think?

What will happen when an air filled

balloon is placed into the aquarium with dry

ice?Will the balloon be crushed?

Will the balloon sink to the bottom?

Will the balloon float out of the aquariummagically?


13/27


Carbon Dioxide gas has a higher density

than air. The carbon dioxide gas fills the

aquarium from the bottom to the top as itturns from a solid into a gas. The air filled

balloon floats on the Carbon Dioxide gas

because it is less dense. Depending on the

amount of Carbon Dioxide in the aquarium,

the balloon will either float inside or be

pushed out over the top.


14/27

What Do You Think?

What will happen when regular air filled

soap bubbles are blown into the aquarium

with the dry ice?Will the bubbles freeze?

Will the bubbles change colors?

Will the bubbles float like the balloon in theearlier experiment?


15/27


Since the air filled soap bubbles have a

density less than the carbon dioxide gas,

they float on the Carbon Dioxide gas aswell. Like the balloon in the first

experiment, some of these bubbles might

also be pushed over the top out of the

aquarium.


16/27

What Do You Think?

What will happen when dry ice and water

are placed into one of the small film cans?

Will the can crack open violently?Will the can just sit there and look boring?

Will the can deform?


17/27


When water is added to dry ice, it

sublimates or changes from a solid to a gas

much more quickly. If you seal them upinside the container, the pressure of the

carbon dioxide gas builds up and pops the

top off the can. It is important not to seal

dry ice in an air tight container!!!


18/27

What Do You Think?

What will happen when 4 candles at

different heights are lit in the aquarium with

the dry ice?Will they all be put out by the dry ice?

Will they keep burning until there is no more

candle left?

Will they make sparks and really big flames?


19/27


Fire needs oxygen to burn much like

humans need oxygen to breathe. Carbon

dioxide smothers the oxygen, extinguishingthe candles flame.

Carbon dioxide is used in fire extinguishers.


20/27

Deadly Carbon Dioxide

Lake Nyos, Cameroon


21/27


This volcano in Cameroon, a country in

Africa, has a lake sitting inside of it. Some

slight activity occurred in 1984 and 1986releasing a Carbon dioxide gas bubble from

within the lake. Since the gas is heavier

than air, it rolled down the sides of the

volcano like fog into the surrounding

village. Lots of people and animals died

from suffocation.


22/27

Conclusions About Dry Ice

Dry Ice is fun

Dry Ice is used any many ways to keep

things frozen and cold for transportDry Ice is a substance that goes directly

from a solid to a gas under normal

temperatures and pressureCarbon Dioxide is important to our lives


23/27

Materials

Materials

aquarium (10 gallon)

50 lb block of dry ice

thick rubber gloves

tongs

candles

lighter latex gloves

metal spoon

soap bubbles

plastic volcano

lighter with long flame

styrophone cups

water and container

cooler for dry ice

Powerpoint slides Dry Ice write-ups


24/27

References

Web References

http://www.dryiceinfo.com/

http://www.gomilpitas.com/homeschooling/explore

chemistry.htm http://oror.essortment.com/dryiceprojects_opl.htm

http://ousd.k12.ca.us/~codypren/4f.html

http://www.howstuffworks.com/question264.htm

http://www.rockitscience.com/dryice.html

http://www.geocities.com/Heartland/Ranch/8785/exp1.html

http://www.geocities.com/Heartland/Ranch/8785/exp2.html


25/27

Literature

Literature

Good Web Resources

DryIceInfo.com Howstuffworks.com

Good Fun Demo Book

Title: Dry Ice Investigations

ISBN: 0924886153Price: $15.64 @ booksamillion

For: Grades 6-8


26/27

Getting Dry Ice

Local Contact Information

Nex-Air of Batesvi l le, MS

Phone: (662) 563-8613 Oxford Delivery Driver: Mr. Tony Arnold

Call on Wednesday to reserve a block (usually only

one block can be reserved from the shipment)

Delivery comes every Thursday and blocks can bepicked up late Thursday or early Friday

Price per block = ~$16.00

Always very helpful people for teachers!


27/27

Images

Images to be added later!

Documents

Dryice Demos