A. material B. substance C. agent D. element 相关知识点: 试题来源: 解析 D 正确答案:D解析:element n.(化学)元素;成分,要素material n.材料,原料;素材,资料。substance n.物质;实质;要旨,基本内容;根据,理由。agent n.代理人,代理商;(化学)剂。
瑞鸿网词典双语例句Carbon is an element, while carbon dioxide is a compound.碳是一种(化学)元素, 而二氧化碳则是一种化合物.
百度试题 结果1 题目Carbon is a(n) ___ while carbon dioxide is a compound. A. material B. 。 substance C. agent D. 。 E. lement 相关知识点: 试题来源: 解析 d 反馈 收藏
It cannot be an element because there is more than one kind of nuclei in the CuO sample. It cannot be a mixture because a chemical bond is formed between Cu and O. It is a compound because the two elements are present in a fixed proportion by mass. A compound is a pure substance. ...
What type of compound is likely to form? What is the basic unit of matter? The human body is mostly composed of what element? a. Nitrogen b. Carbon c. Oxygen Si a. Is this an atom, molecule, or compound? b. What is the name of it? c. How many of each sub-atomic...
carbon bisulfide carbon bisulfidecarbo carbon black charcoal carbon cluster carbon current collec carbon dioxide conten carbon dioxide emissi carbon dioxide narcos carbon disulphide a a carbon fiber composit carbon fiber sheet carbon fibers fibres carbon mass transfer carbon material works carbon monoxide rec...
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Carbon dioxide is not found on the periodic table of elements. This is because it's a compound made from the atoms of more than one element. A carbon... Learn more about this topic: Carbon Dioxide | Definition, Formula & Properties ...
A semiconductor is a substance that has specific electrical properties that enable it to serve as a foundation for computers and other electronic devices. It is typically a solid chemical element or compound that conducts electricity under certain conditions but not others. This makes it an ideal ...
The terms element and compound are commonly used in chemistry. If you need a simple explanation of what these terms mean, we have your solution.