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。
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...
So, is copper a pure substance or a mixture?Yes, copper is a pure substance as copper has definite properties. It is made up of only one kind of atom. A substance having one or more atoms in the same proportion throughout the substance is a pure substance. It is a d-block metal wi...
What is the difference between a pure substance and a mixture:一种纯物质和混合物的区别是什么a,A,be,Pure,and,pure,what,the,纯物质,What 文档格式: .ppt 文档大小: 218.5K 文档页数: 11页 顶/踩数: 0/0 收藏人数: 0 评论次数: 0 文档热度: ...
Is helium classified as a pure substance, a pure element, a homogeneous mixture, or a heterogeneous mixture? Is a pure silver ring classified as an element, a compound, a homogeneous mixture, or a heterogeneous mixture? Explain. Is milk classified as a...
Compound is a pure substance. 08:03 Give one important feature of an element. 01:11 Why is water a compound? 01:22 What type of mixture is formed when lime juice is mixed in water? 02:54 Name the method by which rice can be separated from its husk. 01:59 Give an example of a ...
QUESTION 8The heating curve for a pure substance at atmospheric pressure is shown in the graph below.12090 A 0 0 0601300Time(minutes)8.1 Write down the following for this pure substance:8.1.1. Melting point 54C(1)8.1.2. Boiling point 93C(1)8.2. Is this pure substance water? Give a re...
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. ...
这结合以加速的“湿outperformance与一部透明影片的组合,做它理想为介入高清晰标记的应用 [translate] a亚洲渔业水产与养殖论坛 Asian fishery aquatic product and cultivation forum [translate] aThe molecule is the smallest particle of a pure substance 分子是一种纯净的物质的最小的颗粒 [translate] ...
Suppose you are given a sample of a homogeneous liquid. What would you do to determine whether it is a solution or a pure substance?Liquid mixturesThe homogenous liquid mixture is characterized by the presence of an equal quantity of t...