Chemical reactions take place when the atoms of two or more substances exchange or share electrons. The reaction produces atoms and molecules with the electrons arranged differently. The changed configuration of the atoms involves a change in energy, meaning the chemical reaction either gives off or ...
What are chemical changes in physical chemistry? What is the term for a substance undergoing a chemical change? What happens during a chemical reaction between two compounds? What happens to atoms in a chemical reaction? What is a transition state in a chemical reaction?
During a chemical reaction, atoms get rearranged, forming new substances. Chemical reactions involve the interaction of atoms' electron clouds... Learn more about this topic: Basic Properties of Chemical Reactions from Chapter 2/ Lesson 14 71...
When iron rusts, it is a chemical change. What happens during this process? A. The color remains the same. B. No chemical reaction occurs. C. A new substance is formed. D. The mass of iron decreases. 相关知识点: 试题来源: 解析 C。铁生锈是化学变化,在这个过程中会形成新物质。A ...
37.It is hard to explainA.what is a chemical changeB.what a chemical change isC.how is a chemical changeD.how a chemical change is7.It is hard to explain _A.what is a chemical change B. what a chemical change is C. how is a chemical change D. how a chemical change is 4( ...
After adding the chemical, we observed a change. What might be the next step? A. Add more chemicals. B. Write down the observation. C. Repeat the step. D. Do nothing. 相关知识点: 试题来源: 解析 B。解析:观察到变化后应该记录观察结果。A 选项添加更多化学物质可能会使实验失去控制;C 选项...
Read the full-text online article and more details about "What's On: Chemical Change" - Birmingham Evening Mail (England), March 14, 2005Birmingham Evening Mail (England)
athose set forth below 下面被指出的那些[translate] aspained spained[translate] aThe best title for this passage is 19th-Century Family . 正在翻译,请等待...[translate] aIt is hard to explain what is a chemical change 解释是坚硬的什么是化学变化[translate]...
刷刷题APP(shuashuati.com)是专业的大学生刷题搜题拍题答疑工具,刷刷题提供For a chemical reaction, what will change as the reaction proceeds ( )A.The equilibrium constant becomes smallB.The reaction rate decreasesC.The activation energy decreasesD.The rate
refers to the details of that rearrangements of atoms that occur during chemical change, and that strongly affect the rate at which change occurs. Energetics refers to the thermodynamics of chemical change, relating to the uptake or release of heat. More importantly, this aspect of chemistry contr...