But at high temperatures, they undergo an endothermic reaction producing various oxides of nitrogen.
From the en.wikipedia.org
High-energy neutrons can also produce tritium from lithium-7 in an endothermic reaction, consuming 2.466 MeV.
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Rupturing the internal water bag starts an endothermic reaction and allows the pack to be used to reduce swelling.
From the en.wikipedia.org
Generic potential energy diagram showing the effect of a catalyst in an hypothetical endothermic chemical reaction.
From the en.wikipedia.org
This reaction, commonly called steam-methane reforming or SMR, is endothermic, and the heat transfer limitations place limits on the size of and pressure in the catalytic reactors used.