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...
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? How is an exothermic reaction identified? Is energy created during an exot...
In an exothermic reaction, energy is transferred from What happens to the energy release of an exothermic reaction? What is a condensation reaction in organic chemistry? Arrange the following changes accordingly: evaporation, condensation, deposition, ...
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...
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...
In exothermic changes, the system loses heat. 3. Heat Release: During an exothermic change, the energy in the form of heat is transferred from the system (the material undergoing the change) to the surroundings (the environment around the material). 4. Examples of Exothermic Changes: - ...
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...
Is freezing endothermic or exothermic? When water becomes a solid, it releases heat, warming up its surroundings. This makes freezing anexothermic reaction. Is exothermic melting? Changes from a more-ordered state to a less-ordered state (such as a liquid to a gas) are endothermic. Changes fr...
An exothermic (exoergic) nuclear reaction is areaction 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 reacti...