xUmp.com Logo

Back-To-School 2020 Science Supplies Sale
Back-To-School 2020 Science Supplies Sale
Cristalheat - Supercooled Heat Pack - Image One


Share this product:

Cristalheat - Supercooled Heat Pack

by xUmp.com   Item#: 13494   4.5 star rating 3 customer reviews
List Price:$12.99
Sale Price: $5.99 /each
You Save: $7.00 (53%)
IN STOCK Ships next business day.
Add to cart to see shipping prices.

Only 10 left in stock - order soon!
QTY:
 

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





Age:
13 +
Box Size:
5.00 x 4.00 x 0.50 inches
12.70cm x 10.16cm x 1.27cm
Weight:
0 lb 6 oz
0.17 kg

Customer Reviews


4 star rating  Reusable Heat Pack
Stephan from USA, Colorado, Lafayette
We bought 4 to beat our ski boots before starting for the day. My son kept having to show off the crystallization heaters to friends and family. One in each boot works great to start off with toasty toes and it feels like a better and quicker fit.

4 star rating  Good
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.

5 star rating   A. Long from Lafayette, IN, USA
works well. easy to reset.


FEATURED PRODUCTS

Dr Johnson's Heat Engine.

$69.99 $49

Dr Johnson's Heat Engine

This is a great clean heat demonstration model for the classroom setting!

Super Science Magnet Kit.

$29.99 $27.99

Super Science Magnet Kit

Exciting magnet exploration for ages 8 and up!

Human Anatomy Model - Large 20 in.

$149.99 $109

Human Anatomy Model - Large 20 in

The large realistic model has removable organs that can be studied and set back into the correct position.

Magnetic Levitator - Classic.

$14.99 $10.99

Magnetic Levitator - Classic

This is a classic demonstration toy of the powers of magnetic fields!

Tarantula Specimen.

$39.99 $24.99

Tarantula Specimen

Great tarantula specimen for the science classroom!

Balancing Eagle.

$7.99 $4

Balancing Eagle

Defy gravity with this cool balancing eagle!

Science-Sidebar: Science Education Articles

xUmp.com Logo


Join our tribe:

SIGN-UP & SAVE

Sign-up for our weekly discounts and promotions email newsletter.



xUmp.com Catalog

CATALOG

View xUmp science supplies catalog

At xUmp.com, we are passionate about science. We believe in hands-on learning and making science fun. - Anton Skorucak, Physicist and Founder

At xUmp.com you will find a large selection of scientific products carefully curated by real scientists and educators. We sell everything from educational toys, teacher supplies for science classroom, lab equipment, science toys, science fair supplies, classroom equipment, chemistry glassware, chemistry lab equipment, physics demos, electronics supplies, robots, science kits to geeky science gifts.