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Sudden crystallization of a supersaturated solution. This is a physical phase change, not a chemical change.
Wiki User
∙ 11y ago
Wiki User
∙ 16y agoH2O + NH4 = Freezing
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Can you make a rocket with a instant cold pack?
no
How does breaking cold pack release cold?
the chemicals inside react to create the cold
Is a cold pack an endothermic reazction?
The reaction is endothermic.
What are the advantages of cold therapy gel pack verses ice pack?
Mix critic acid and sodium and bicarbonate
Why hot and cold packs are very convenient to use?
Both types (hot and cold) of packs can be easily transported and used in travel. They do not take up a lot of room in a bag or box. If someone were to get hurt, a cold pack can quickly be used to help them. The same goes with a hot pack.
Should cold pack or heat make a lump down?
A cold pack is to make lumps go down and a heat pack is for when your sick.
Can you make a rocket with a instant cold pack?
no
Explain which type of reaction exothermic or endothermic would be required to make a cold and a cold pack or hot pack?
You would have to have an Eacthomatdid reaction of chemcal chance to change a cold pack to a hot pack.
What are 'cold pack' and 'hot pack'?
cold pack contains cold stuff like ice, hot pack stuuf like fire
How can we make an efficient instant cold pack by using ammonium nitrate and water?
egg
Why is transmission not kicking over when cold?
Could be low in transmission fluid. When the fluid gets up to opperating temperature the fluid expands to make it just enough fluid to make the clutch pack engage properly.
Example how a cold pack works?
Ammonium nitrate and water are in separate compartments in the cold pack. To activate the cold pack, you break the compartments in the pack so the ammonium nitrate and water mix. The ammonium nitrate absorbs all of the heat, making the water ice cold.
Can you be poisoned from a cold pack?
Yes. It is possible to be poisoned by an ice pack.
How cold does a cold pack get?
Just below freezing is ideal
Who makes a custom cold pack?
Nortech Laboratories Inc. www.nortechlabs.com Hot Cold Therapy Pack: Therma-Kool
When you activate an instant cold pack water mixes with a chemical and the pack gets very cold This is an example of?
its an endothermic reaction
Do you put a cold pack on neck for headache?
yes so it can relax you and make your head not hurt any more :)
