Atoms of different elements have different numbers of protoris, neutrons and electrons. The number of protons an atom has determines which element it is.The combination of protons, neutrons and electrons in an atom gives each element its unique features. For example, the four electrons in carbon...
21 All elements are made of atoms.Atoms are made of subatomic particles.(a)(i) Complete the labels on the diagram of an atom.X Nucleus containing XX...and...[2](ii) Atoms have no overall charge.Explain why.Use ideas about subatomic particles in your answer.[1](b)Look at the inform...
Atoms are too small to see, “uncuttable,” and indestructible. All atoms of a given element are exactly alike and atoms of different elements are different. In 1897, the English scientist named J.J. Thomson provided the first hint that an atom is made of even smaller particles. Can we ...
Atoms are units of matter that possess chemical and physical properties capable of classifying them as elements. These are considered the basic building blocks of the universe because atoms form molecules which comprise all the different kinds of matter we see....
The ability of atoms and molecules to self-assemble into spectacular patterns on surfaces is clearly demonstrated in this scanning tunnelling microscope (STM) image taken by Guilluame Schull and Richard Berndt of Christian-Albrechts-Universität in Kiel, Germany, which was presented at the recent ...
Scientists have made a new kind of paipt (油漆). The colors in the new paint aren't like those in most paint. They're more like the colors on a butterfly's body.The colors in most paint come from pigments (料). For hundreds of years, humans have been putting different things toget...
consist of atoms. 2The distinguished enterprise consists of 8 departments, each of which is made up of 10 to 20people, who graduated from top universities.这家优秀的公司由8个部门组成,每个部门又由10至20名名校毕业生组成。consist of由……组成(相当于 be made up of) A consists of B= A is...
“I like to guess what my hostess has in her kitchen cupboards and I guessed lots of salt and look….lots of different kinds of salt. That was funny to me.” “Yes, I can see why you found that amusing,” said the man. “Can I play?” ...
We all know, is made up of atoms 翻译结果4复制译文编辑译文朗读译文返回顶部 As we all know, is a molecule made up of atoms 翻译结果5复制译文编辑译文朗读译文返回顶部 Everybody knew that, the member is by the atomic building 相关内容 ...
linear aliphatic diamines and dicarboxylic acids, or lactams, or i-amino carboxylic acids, wherein 11 to 12 carbon atoms are present in the recurring units per carbonamide group, and wherein said polyamide component further comprises a maximum of 80 wt.% of one of the polyamides PA11 and ...