Home
Support
About Us
Contact Us

My Account

Shopping Cart

Fix-It Tool Kit on a Keychain

Sign-up for discounts:

xUmp Coupon Code: Save 5% OFF Use code: SAVE5

Search

Products By Category

Toys & Gifts

Science Kits

Robotics & Electronics

Magnets

Optics & Lasers

Microscopes

Telescopes

Solar Cells & More

Lab Supplies

Fossils & Rocks

Globes

Puzzles & Games

Educational Videos

Books & Study Charts

Science Posters

Go Green Stuff

Special Sales

Products by Science

Astronomy

Biology

Chemistry

Earth Science

Physics

All Products

New Products

Full Category List

Full Product List

Products By Age & Price

Why Shop Here?
100% Satisfaction
365-day Warranty
90-day Returns
Scientists On Staff
10 Years In Business
Same Day Shipping
FREE Shipping w/$99
International Shipping
Green Company

4M Science Kits Sale: Great summer projects!

Cristalheat - Supercooled Heat Pack

Product#: 13494

(2 customer reviews)

Deal Of The Day

Earth In My Room
Buy it now! Deal ends at midnight!

Regular Price: ~~$39.99~~
Today's Price: $17.00

According to Wikipedia, supercooling is a process of lowering the temperature of a liquid or gas below its freezing point, without it becoming a solid. However, a liquid below its standard freezing point will crystallize in the presence of a seed crystal around which a crystal structure can form. This scientific principle actually has real-world applications--for example, this has been used in freezers that cool drinks to a supercooled level so that when they are opened they turn to slush. This principle is also found in this supercooled heat pack. The heat pack consists of sodium acetate in a supercooled state in a sealed plastic pouch. There is a disk in the pouch that is clicked to stimulate the liquid to turn into a solid. The freezing temperature of the liquid is higher than room temperature, so when the liquid turns into a solid, it releases enough energy to raise its temperature towards its freezing point, which heats the heat pack very quickly, right in front of you! To supercool the liquid again, it must first be heated to the melting temperature again and allowed to cool. This is an excellent demonstration to use in science classrooms!

Features:

Utilizes supercooling to produce heat
Great for muscle aches
Also excellent for scientific demonstration

Recommended for ages 13 and older.

Box Size: 5.00in (12.70cm) x 4.00in (10.16cm) x 0.50in (1.27cm)
Weight: 0 lb 6 oz ( 0.17 kg )

Related Products

Fire Syringe
	$14.95 /each Age: 13+ Item#: 13434
Teach the scientific principle behind diesel engines with this interesting science experiment!

CHEM C1000 Chemistry Kit v2.0 by Thames & Kosmos
	$59.95 /each Age: 10+ Item#: 10494
This chemistry learning and experiment kit comes with components and chemicals for over 75 amazing experiments!

Heat Conductometer
	$9.95 /each Age: 13+ Item#: 10875
Heat conductometer with aluminum, brass, steel, nickel, and copper spokes.

Customer Reviews

Good
Posted on: Jan 21 2013 by: T. Mcdonald from United states, NY, Queens

Heat packs work really well. Cant give 5 stars until I have seen the longevity of the packs though.

Posted on: Dec 21 2012 by: A. Long from Lafayette, IN, USA

works well. easy to reset.


Search by keyword or item # Browse Product Categories

	About Us About Us Press Releases Legal Info Privacy Statement	Help / Support Shipping Info School PO Info Customer Support Contact Us	We Accept:	xUmp.com is a Green Company! more info	Safe Shopping & Privacy Guarantee We use best encryption and are PCI compliant with daily audits! We do NOT store your credit card number and we do NOT share your personal information with anyone!