Oxygen is a/an ___. A. element B. compound C. mixture D. solution 相关知识点: 试题来源: 解析 A。氧是一种元素。选项 A“element”是元素,氧是元素;选项 B“compound”是化合物;选项 C“mixture”是混合物;选项 D“solution”是溶液。
百度试题 结果1 题目Which of the following is a compound? A. Oxygen B. Hydrogen C. Water D. Nitrogen 相关知识点: 试题来源: 解析 C。水(Water)是化合物。氧气(Oxygen)、氢气(Hydrogen)和氮气(Nitrogen)都是单质。
1. Which of the following is true about oxygen? Oxygen is a compound. Oxygen has an atomic number of 10. Singlet oxygen is a dioxygen. 2. Molecular oxygen Atomic oxygen Triplet oxygen Singlet oxygen 3. Oxygen that is chemically bound to two molecules of hydrogen ...
1.a form of oxygen, O3, produced when an electric spark or ultraviolet light passes through air or oxygen, that in the upper atmosphere absorbs ultraviolet rays, thereby preventing them from reaching the earth's surface, but that near the earth's surface is a harmful irritant and pollutant:...
Water is a compound c___ the elements of hydrogen and oxygen.(根据首字母单词拼写) 相关知识点: 试题来源: 解析 containing [解析] 考查非谓语动词。句意:水是一种含有氢和氧元素的化合物。根据句意以及首字母提示,空处应用动词contain,表示“包含,含有”,contain与逻辑主语compound之间是主动关系,所以空处...
It is also used in smelting and in other metal fabrication processes. In addition, it is widely used in numerous chemical processes, such as the production of fertilizer and in the manufacture of paints and varnishes. Oxgen, on the other hand, is a compound made up of two oxygen atoms ...
Water is a compound containing the elements h and oxygen. (根据首字母单词拼写) 相关知识点: 试题来源: 解析 hydrogen 【详解】 考查名词。句意:水是一种含有氢和氧元素的化合物。根据连词and后的名词oxygen可知,用名词形式。根据首字母提示及句意,故填hydrogen。
Oxygen is a chemical element; it has symbol O and atomic number 8. It is a member of the chalcogen group in the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds. Oxygen is Earth's most abundant...
答案:containing.所给词contain的意思是"包含;含有",及物动词,本句为主系表结构,设空处应用非谓语动词作定语修饰compound,compound与contain之间为主动关系,应用现在分词形式,故填containing。结果一 题目 Water is a compound___ the elements hydrogen and oxygen. (contain) 答案 答案:containing.所给词contain...
A. Copper oxide B. Oxygen copper C. Copper oxygen D. Oxide copper 相关知识点: 试题来源: 解析 A。解析:铜(copper)是金属元素,氧(oxygen)是非金属元素。根据英文命名规则,金属在前,非金属在后且氧变为oxide,所以是Copper oxide。B、C、D选项不符合正确的命名规则。