aA compound is a substance that can be split into two or more elements. Water is a compound because it can be split into its components, hydrogen and oxygen. 化合物是可以被分裂成两个或多个元素的物质。 因为它可以被分裂成它的组分、氢和氧气,水是化合物。[translate]...
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。
A substance that cannot be broken down into simpler substances by chemical means is called ___. A. a compound B. an element C. a mixture D. a solution 相关知识点: 试题来源: 解析 B。本题考查化学物质的分类。“an element”意思是元素,不能通过化学方法分解为更简单物质的就是元素。A 选项...
Pure compounds and elements differ from mixtures in one key way: the substances in a pure compound are held together by chemical bonds. These chemical bonds cannot be broken. Since they contain a single substance only, elements cannot be decomposed by ordinary chemical methods, such as the appli...
An element is a substance which is constituted of only one kind of atoms and cannot be further divided by any physical or chemical means. A compound is a substance which is formed due to the chemical combination of two or more elements a definite pro
A compound is given. What is the name of the compound? A sample of a compound is found to contain 5.60 g N, 14.2 g Cl, and 0.800 g H. What is the simplest formula for this compound? What is an element and what ...
A substance that cannot be broken down into simpler substances by chemical means is called a(n) ___. A. element B. compound C. mixture D. solution 相关知识点: 试题来源: 解析 A。本题考查化学物质的分类。选项 B“compound”是化合物,可以通过化学方法分解为更简单的物质;选项 C“mixture”是混...
A substance that cannot be broken down into simpler substances by chemical means is called: A. Compound B. Element C. Mixture D. Alloy 相关知识点: 试题来源: 解析 B。“element”(元素)不能通过化学方法分解为更简单的物质。选项 A“compound”是化合物,可以分解;选项 C“mixture”是混合物,不...
The main classifications of matter include the categories element and compound, either of which may also be called a substance (which is a less specific term), and mixture, of which there are also many sub-categories.Definition of a (Chemical) Mixture:...
If a substance is an Arrhenius base, (a) is it necessarily a Bronsted-Lowry base? (b) Is it necessarily a Lewis base? Explain. Tell if the given compound acts as a Lewis base, a Bronsted-Lowry base, both, or neither. A Bronsted-Lowr...