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。
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两个选项都不对。而D项的表达本身确实是错误的。
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...
Is a pure silver ring classified as an element, a compound, a homogeneous mixture, or a heterogeneous mixture? Explain. Is milk classified as a pure substance, a pure element, a homogenous mixture, or a heterogeneous mixture? A substance that can't be...
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: ...
and provides two and pure peanut oil and put forward count and quality low price and quartet and quickly he s subd and quite possible and quite possibly and quite tedious and rachel moved in a and ran to us and ravens flutter and reading skills and realize your drea and really bad eggs ...
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....
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]...
PHASE-CHANGE PROCESSES OF PURE SUBSTANCES Compressed liquid (subcooled liquid): A substance that it is not about to vaporize Saturated liquid: A liquid that is about to vaporize Saturated vapor: A vapor that is about to condense. Saturated liquid–vapor mixture: The state at which the liquid ...
Mixtureshave many of the properties of their constituents (e.g. the element 'oxygen' is part of the mixture 'air' and some of the properties of air are due to the oxygen part - but those properties are generally less strong / intense than those of pure oxygen because of the presence of...