Web12 sep. 2024 · They are denoted by a negative heat flow (heat is lost to the surroundings) and decrease in enthalpy (ΔH < 0). In the lab, exothermic … Web6 apr. 2024 · The process of dissolving can be endothermic (temperature goes down) or exothermic (temperature goes up). When water dissolves a substance, the water molecules attract and bond to the particles (molecules or ions) of the substance causing the particles to separate from each other. The bond that a water molecule makes is not a covalent or …
Exothermic and endothermic reactions - AQA - BBC Bitesize
Web29 jun. 2013 · See answers (3) Best Answer. Copy. Dolphins are endothermic, which means they are warm-blooded. All mammals are endothermic. Wiki User. ∙ 2013-06-29 08:38:56. This answer is: WebPoikilotherm animals must be able to function over a wider range of temperatures than homeotherms. The speed of most chemical reactions vary with temperature, and in order to function poikilotherms may have … taxes when selling home within two years
What Makes An Animal Endothermic? - ThoughtCo
Web21 sep. 2024 · A chemical reaction or physical change is exothermic if heat is released by the system into the surroundings. Because the surroundings are gaining heat from the system, the temperature of the surroundings increases. The sign of q for an exothermic process is negative because the system is losing heat. Figure 17.3. 1: (A) Endothermic … Web13 jul. 2024 · Whales, dolphins, seals and other marine mammals can generate their own heat and maintain a stable body temperature despite fluctuating environmental conditions. Like people, they are endothermic homeotherms—or more colloquially, “warm-blooded.” Click to see full answer Just so, are fish ectothermic or endothermic? Web14 feb. 2024 · Here is how you would classify the phase changes as endothermic or exothermic: melting, evaporation and sublimation are endothermic processes while freezing, condensation and deposition are … taxes when selling land