1.react vi.(化学)反应(教材 P) When we use metals,it is important to knowhow they react with different substances,for example,water and oxygen.当我们使用金属时,了解它们和不同的物质(例如水和氧气)如何发生反应是很重要的。(1)react with与……发生反应react to对……)产生反应;回应react against...
All the six Group 2 elements react with oxygen to form oxides, though not as readily as the Group 1 elements. The reaction requires heat. The following equation shows how Magnesium (Mg) would react with oxygen (O2) 2Mg + O2⟶ 2MgO ...
Which of the following statements applies to acids,bases,and salts!A.Their solutions conduct electricityB.They react with chemical indicatorsC.They cause litmus paper to change colourD.They react with metals to produce hydrogen gas请翻译一下问题和最后一个选项,下面那位在写些什么看不懂 答案 问题...
Aluminum reacts with oxygen, even at room temperature, to produce an extremely thin aluminum-oxide layer that protects the underlying metal from many corrosive environments. We should be careful, though, not to generalize this behavior. For example, aluminum powder (because it has a high surface...
iv. Which of the following metals reacts vigorously with oxygen? Zinc Magnesium Sodium Copper VERY SHORT ANSWER TYPE QUESTIONS Q.1.Name two metals which catch fire if kept in open air. Q.2. Name the metals which can displaces hydrogen from acid:- ...
Dark oxygen – defined in this context as oxygen that's produced without using sunlight, as it is on the Earth's surface via photosynthesis – is produced when nodules comprised of several rare metals and that lie on the deep, dark seafloor react with salt water, according ...
Why do metals when reacting with oxygen are called oxides like " magnesium oxide" whereas nonmetals reacting with oxygen become dioxides like "carbon dioxides", note that the two react with oxygen whi Give reasons why most of the compounds formed by transition elements are colored. ...
the surface must remain bright and rust-free without periodic cleaning. On the other hand, the slow-weathering steels, which react with the constituents of the atmosphere to form an adherent uniform coating of rust, are now being used for cladding buildings, in spite of the fact that a rusty...
Like the alkali metals, the alkaline earth metals react with acids and water to produce hydrogen gas. These reactions, however, are less intense than are those with the alkali metals. Alkaline earth metals also react vigorously with oxygen. Magnesium burns so actively in air, for example, that...
Reactive metals lose electrons easily and produce vigorous (explosive or potentially dangerous) reactions with water or acids. Unreactive metals do not lose electrons easily and are inert under normal conditions and with substances they are likely to encounter.Reactivity...