Table of Contents
Is frost forming endothermic or exothermic?
When water becomes a solid, it releases heat, warming up its surroundings. This makes freezing an exothermic reaction.
Is freezing water Exergonic or Endergonic?
Endergonic reactions are not spontaneous. Examples of endergonic reactions include endothermic reactions, such as photosynthesis and the melting of ice into liquid water.
Is the formation of frost endothermic?
Or frozen water solid to make ice. You’ve probably even seen frost on the grass in the winter. All of these changes in the phase of water are accompanied by either an input or output of heat, so they are either an endothermic reaction or an exothermic reaction.
Which change is exothermic freezing of water?
Fusion, vaporization, and sublimation are endothermic processes, whereas freezing, condensation, and deposition are exothermic processes.
Is a glowstick endergonic or exergonic?
Glow sticks give off light but not heat. Because energy is released, the glow stick reaction is an example of an exergonic (energy-releasing) reaction. However, it is not an exothermic (heat-releasing) reaction because heat isn’t released. You can think of exothermic reactions as a type of exergonic reaction.
What phase change is endothermic?
Phases and Phase Transitions
| Phase Transition | Change of Enthalpy |
|---|---|
| Vaporization (liquid to gas) | ΔH > 0; enthalpy increases (endothermic process) |
| Sublimation (solid to gas) | ΔH > 0; enthalpy increases (endothermic process) |
| Freezing (liquid to solid) | ΔH < 0; enthalpy decreases (exothermic process) |
Is water condensation endothermic or exothermic?
Evaporation is endothermic. For condensation the molecules are giving up their heat energy. When molecules give up heat energy, it is called exothermic. Condensation would be exothermic.
What type of reaction is a glowstick?
Is cellular respiration Endergonic or exergonic?
Photosynthesis is an endergonic (energy-consuming) process. Cellular respiration is an exergonic (energy-releasing) process.