cold pack contains cold stuff like ice, hot pack stuuf like fire
You can use ammonium nitrate to make a cold pack. When the salt dissolves in water, it absorbs heat from its surroundings, causing the pack to become cold.
No you should not do either. If you experience any pain from a hernia you should seek medical attention immediately.
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.
When a cold pack is broken, it initiates a chemical reaction between the substances inside the pack. This reaction absorbs heat from the surrounding environment, causing the pack to feel cold. Breaking the pack allows for the substances to mix and react, resulting in the release of cold temperatures.
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Eat.
It originated from the French -'nombre'
You would have to have an Eacthomatdid reaction of chemcal chance to change a cold pack to a hot pack.
A cold pack is to make lumps go down and a heat pack is for when your sick.
To make price in shops cheaper Many flat packs can be transported insted of one assembled unit
You could use a telescope