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...
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: ...
What would be the key difference between a pure substance and a mixture when discussing forms of matter? Is urine classified as a mixture or a pure substance? Explain. The term reagent is commonly used in chemistry. What does it mean?
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. ...
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]...
a mirage a mirror of hope as i a mixed school a mixture that stirs a model of initiation a model plane a modeler making an i a modern elaine a molten image a moment came a monents error can b a money too far a monthly one a moon cake entrance a moral victory a more comprehensi ...
A mixture in which the components mix with each other to form a uniform composition throughout the solution is known as a homogeneous solution and a heterogeneous mixture is a mixture in which the composition of the components is different....
5 A pure solid substance is heated into a liquid from 30 C to 90 C. The substance has a melting point of 60 C. The heating curve of the substance on the temperature-time graph is shown in Fig. 5.1.temperature/℃908070)+X Y6050+40+30time / min Fig. 5.1(a)Describe the differenc...
- Therefore, Diamond is a pure substance. In conclusion, the pure substances among the options are CuSO4·5H2O and Diamond. Summary:- CuSO4·5H2O: Pure substance (compound).- Brass: Not a pure substance (mixture).- Diamond: Pure substance (element).Updated on:18/9/2024 ...