Which of the following is a chemical reaction? A. Melting ice B. Breaking a glass C. Rusting of iron D. Folding a paper 相关知识点: 试题来源: 解析 C。本题考查化学反应的定义。A 选项冰融化是物理变化,物质的状态发生改变但没有新物质生成。B 选项打破玻璃也是物理变化,只是物质的形状发生改变...
Which of the following is a chemical reaction? A. Melting ice B. Breaking a glass C. Rusting of iron D. Folding a piece of paper 相关知识点: 试题来源: 解析 C。本题主要考查化学变化的定义。A 选项冰融化是物理变化,物质的状态改变但没有新物质生成。B 选项打破玻璃也是物理变化,只是物质的...
(ii) The presence of salt in water makes the process of rusting of iron faster. Thus, an iron object will rust much faster when kept in sea-water (which is salty water) than when kept in fresh water (having no salts dissolved in it). ...
For example, the rusting of iron is achemical reaction. 例如, 铁钉的生锈就是一种化学变化. 互联网 From the viewpoint of scientists, inflammation means luminous, euthermicchemical reaction. 在科学家看来, 燃烧意味着发光 、 发热的化学反应.
Within activities associated with life also are driven bychemical reaction. 化学反应不会发生在起泡的试管里. 互联网摘选 5、 The problem is whether thechemical reactionis reversible. 问题就在于该化学反应是否可逆. 词典精选例句 6、 For example, the rusting of iron is achemical reaction. ...
For example, the rusting of iron is achemical reaction.───例如, 铁钉的生锈就是一种化学变化. Chemical reaction to neutralize a chemical.───化学反应使化学品无效。 It's not achemical reaction.───它不是化学反应。 They think I caught fire because achemical reactioncaused spontaneous combus...
It is an example of an exothermic reaction. Photosynthesis –Plants use sunlight to convert carbon dioxide to oxygen, a type of photochemical reaction. Rusting –Iron gradually reacts with oxygen and oxidizes to form iron (III) oxide, commonly known as rust. Burning –Combustion of fuel takes ...
There are some examples of chemical reactions that we come across in our daily lives: rusting of iron, burning of wood, and mixing baking soda and vinegar. Others include exploding fireworks, rotten food, and metabolism. These reactions happen; for instance, iron cannot be un-rusted, wood can...
Similarly, raw vegetables become cooked vegetables when we cook them. The production of new compounds with diverse chemical characteristics occurs in this case. As a result, the rusting of iron is a chemical reaction. Read the article to learn about chemical processes, equations, their types, cha...
9.Any change which alters the chemical properties of a substance is a chemical change. For example, the rusting of iron is a chemical reaction.任何改变物质化学性质的变化都是化学变化。例如,铁钉的生锈就是一种化学变化。 10.We have seen many chemical changes, from which physical changes are diffe...