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Example how a cold pack works?

Updated: 9/24/2023
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10y ago

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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.

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Q: Example how a cold pack works?
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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


When you activate an instant cold pack and water mixes with a chemical and the pack gets very cold what example is this?

It is an example of an endothermic reaction. It is absorbing heat.


Why does a cold pack get cold when the chemical reacts?

A cold pack creates a endothermic reaction when the chemical reacts, which means that energy is taken from the surrounding, which makes the packaging cold. it is the opposite with a heat pack, an exothermic reaction is created which releases the energy into the surrounding creating the heat. Hope this helped.


Is urea dangerous in a cold pack?

In cold packs is usedAmmonium nitrate. It's dangerous because it can explode. But for this it must be absolutely dry.In a cold pack it is in a water solution. Nevertheless you shouldn't eat it or contact it a long time with your skin. In case of a damage of the cold pack you can just wash it away with water.


What can be mixed to produce a very cold effect that doesn't give off an unsafe gas?

Instant cold packs use water and ammonium nitrate. The ammonium nitrate is a powder found inside the cold pack, and the water is inside a plastic container inside the cold pack. When the plastic container containing the water is broken and mixed with the ammonium nitrate, the water dissolves the ammonium nitrate, which is overall an endothermic reaction, causing the cold pack to get cold.

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