exothermic processes

Which Case Change In Entropy Is Negative?

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Which Case Change In Entropy Is Negative? A negative change in entropy indicates that the disorder of an isolated system has decreased. For example, the reaction by which liquid water freezes into ice represents an isolated decrease in entropy because liquid particles are more disordered than solid particles. Which reaction has negative entropy? Water freezing

What Does It Mean If ΔH Is Negative?

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What Does It Mean If ΔH Is Negative? If ∆H is negative, this means that the reaction gives off heat from reactants to products. This is favorable. If ∆S is positive, this means that the disorder of the universe is increasing from reactants to products. This is also favorable and it often means making more

Which Change Of Phase Represents Sublimation?

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Which Change Of Phase Represents Sublimation? Vaporization: liquid to gas. Sublimation: solid to gas. Deposition: gas to solid. Which change called sublimation? Sublimation is the conversion between the solid and the gaseous phases of matter, with no intermediate liquid stage. For those of us interested in the water cycle, sublimation is most often used to

Is Sublimation Endothermic?

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Is Sublimation Endothermic? Sublimation is an endothermic phase transition that occurs at temperatures and pressures below the triple point of a chemical in the phase diagram. Why is sublimation exothermic? Sublimation is caused by the absorption of heat which provides enough energy for some molecules to overcome the attractive forces of their neighbors and escape

Does Freezing Absorb Or Release Energy?

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Does Freezing Absorb Or Release Energy? Does freezing absorb or release energy? During freezing, the temperature of a substance remains constant while the particles in the liquid form a crystalline solid. Because particles in a liquid have more energy than particles in a solid, energy is released during freezing. This energy is released into the