A. always exothermic. B. always endothermic. C. sometimes exothermic and sometimes endothermic. D. neither E. xothermic nor endothermic. 相关知识点: 试题来源: 解析 A。解析:释放能量的化学反应一定是放热反应。选项 B 吸热反应是吸收能量。选项 C 错误。选项 D 不符合释放能量的描述。反馈...
In the traditional sense, a star is an object that has enough mass and pressure in its core that it can ignite fusion, crushing atoms of hydrogen into helium. Fusion is exothermic, releasing energy. It's this energy that counteracts the force of gravity pulling everything inward. That gives...
How is an exothermic reaction indicated in an equation? How can you tell if a reaction is exothermic? In an exothermic reaction, energy is transferred from Can a chemical reaction be both exothermic and endothermic? What happens to the energy release of an exothermic reaction?
In an exothermic reaction,energy is released because the total energy of the products is less than the total energy of the reactants. ... In the presence of water, a strong acid will dissociate quickly and release heat, so it is an exothermic reaction. What is absorption process? The pro...
aapplication software is any tool that functions and is operated by means of a computer,with the purpose of supporting or improving the software user's work. 应用软件是通过计算机起作用和被管理,为支持或改进软件用户的工作的目的所有工具。[translate] ...
Fission and fusion are prime examples of exothermic nuclear reactions – they result in a huge release of energy as some nuclear mass is ultimately converted into heat, according to Einstein’s famous e=mc² equation. Nuclear Fission Nuclear fission occurs when a heavy nucleus splits into light...
An exothermic (exoergic) nuclear reaction isa reaction that releases energywhile an endothermic (or endoergic) reaction is one that requires an input of energy to take place. ... If the reaction energy is positive, the reaction is exothermic but if the reaction energy is negative, the reactio...
[translate] aadding energy to an equilibrium system that is exothermic to the right causes the system to 增加能量到是放热的在右边的平衡系统导致系统对[translate]
electricity and heat. When energy is released as heat, the process is exothermic, and when heat is absorbed, the process is endothermic. An endothermic reaction is one which results in a net decrease in temperature because it absorbs heat from the surroundings and stores the energy in the bond...
Some chemical reactions — like burning wood or exploding TNT — release heat to their surroundings. Chemists call these exothermic reactions. Increasing the temperature affects an exothermic reaction in two different ways: by changing the rate of the reaction and by changing the balance between produ...