(1)混合物没有固定的组成,一般没有固定的熔沸点;(2)典型混合物:①溶液:溶剂+溶质 如:盐酸、碘酒等②胶体:分散质+分散剂 ③空气:N 2 78%、O 2 21%、稀有气体0.94%、CO 2 0.03%、其他0.03%(体积比) .化合物:由不同种元素组成的纯净物叫化合物。蒸馏水是由水这种物质组成 但水又是由氢元素和氧元素...
Compounds are composed of two or more elements chemically combined. The term mixture refers to a combination of two or more substances that are not chemically combined.Answer and Explanation: Yes, it is possible to have mixtures and compounds compo...
百度试题 结果1 题目mixture and compounds - what are they and examples of each.相关知识点: 试题来源: 解析 mixture and compounds - what are they and examples of each.混合物和化合物-他们和每个例子是什么.反馈 收藏
with a nice blend of experience and youthful energy.The sauce uses a blend of different ingredients.a cross between something and somethinga mixture of very different things – used when you aredescribingwhat something looks orsoundslikeThe building looked like a cross between a museum and a spac...
Homogeneous Mixture Examples Lesson Summary Register to view this lesson Are you a student or a teacher? I am a student I am a teacher Recommended Lessons and Courses for You Related Lessons Related Courses Homogeneous Mixture Definition: Lesson for Kids Mixtures of Elements & Compounds | ...
In the examples, mixtures are prepared in which the radicals R1 and R2 are hydrogen, methyl, ethyl and tert-butyl groups.ALSO:An optical brightening agent for polyolefin fibres comprises a mixture of 2 to 6 compounds of the general formula: wherein R1 and R2 are hydrogen or C1-4 alkyl ...
Give three examples. Which of the following compounds contains the highest percentage of nitrogen? (a) K N O 3 (b) N C l 3 (c) C O ( N H 2 ) 2 (d) F e ( C N ) 2 What is an ideal gas? Choose the BEST answer to the following. Which of these three...
Definition of a (Chemical) Mixture:Mixtures are formed by just mixing or 'intermingling' (another word which means the same as 'mixing') together two or more substances. Those substances may also be referred to as 'constituents' or 'components' - and may be either elements or compounds, ...
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Review of vocabulary Substance -- matter with a fixed composition, either compounds or pure elements. Examples of pure elements are oxygen gas and 24-carat gold. Quartz, the main component of most sand, is a compound of silicon and oxygen with two oxygen atoms for every silicon atom. Silver...