This experiment has two parts. For the first half, you will mix two chemicals that will produce heat and gas. The temperature receptors in your skin will be able to detect the heat. Your ears will detect the gas at it vibrates and escapes its container.
In the second portion you will demonstrate a characteristic in a chemical reaction. For this experiment, it will be an endothermic reaction, which is the absorption of heat energy. This type of reaction is easy to notice because it makes things cold to touch. The chemical you will be using, ammonium nitrate, is actually used in emergency cold packs.
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Yes, you can use black coffee for bitter.
Always follow the directions and ingredients for the specific experiment and don’t combine other chemicals.
what would happen if you mix the two (hot pack & cold pack) together?
Yes, great distinction! I didn’t think of that. Thank you!
It would be helpful to note that the cold pack is a medical cold pack, not a freezer pack for food.
No, you’re needing to find ammonium nitrate, not urea for this experiment.
We have a cold compress with contents urea and water. Can we open that up and use that for this experiment?