A. the other substances B. other substances C. the other substance D. others substance 相关知识点: 试题来源: 解析 B substance作“物质”讲时是可数名词。句意:一种物质如果没有和其他的物质混合,它就是一种纯的物质。根据语境可知,这里的“物质”应该是泛指而不是特指。所以,A、C两个选项都不对。
Mixtures, on the other hand, are considered impure substances. A mixture is created when substances combine but no chemical reaction occurs. In general, a mixture can be separated into its original components, while a pure compound cannot. Of course, there are a handful of exceptions to the d...
A. the other substances B. other substances C. the other substance D. others substance 相关知识点: 试题来源: 解析 B substance作“物质”讲时是可数名词。句意:一种物质假如没有和其他的物质混合,它确实是一种纯的物质。依照语境可知,那个地点的“物质”应该是泛指而不是特指。因此,A、C两个选项都...
aIdentification of the product 产品的证明[translate] aproduct Identification 产品识别[translate] ain case of pure product or substance, it is the mere chemical denomination of the commercialized product. 在纯净的产品或物质的情况下,它是商业化的产品的仅仅化工衡量单位。[translate]...
substancepuremixture混合物difference物质 What is the difference between a pure substance and a mixture? • Add this info to your notes that you took from the last section. • Compound- A substance composed of two or more elements that are chemically bonded to form a new substance with diff...
1. Understanding the Statement: The statement we need to evaluate is "A compound is a pure substance." 2. Definition of Pure Substance: A pure substance is defined as a chemical substance that is made up of only one type of particle. These particles can be atoms, molecules, or ions. ...
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. ...
Mixtures Definition - A mixture contains two or more elements or compounds that are not chemically combined together. To learn about Homogeneous and Heterogeneous mixtures click here.
Is milk classified as a pure substance, a pure element, a homogenous mixture, or a heterogeneous mixture? A substance that can't be chemically broken down into simpler substances is ___. (a) a compound (b) an element (c) an electron (d) a hete...
What is a Mixture... in terms of Chemistry ? Matter can be classified in various ways according to its structure, behaviours andphysicaland chemical properties. The main classifications of matter include the categorieselementandcompound, either of which may also be called asubstance(which is a le...