元素(Elements) 指自然界中一百多种基本的金属和非金属物质，它们只由一种原子组成，其原子中的每一核子具有同样数量的质子，用一般的化学方法不能使之分解，并且能构成一切物质。 化合物(pounds) 是指从化学反应之中所产生，由两种或两种以上元素构成的纯净物（区别于单质）。 例如：氯化钠(sodium chl...
atom • The smallest unit of an element that maintains the properties of the element WHAT IS A COMPOUND? Compound • A substance made of two or more different elements that are combined chemically • Properties of compounds may not be the same as properties of elements that make them up...
Elements and Compounds Elements • Can not be broken down by chemical means • Chemical alphabet • Building blocks • First 92, 88 occur in nature • w/ exception of plutonium, above 92, they are synthesized Atom • Smallest unit of an element that retains the characteristics of th...
Elements and Compounds ? Elements – All particles are alike – The smallest particle of an element that is still recognizable is called an atom – They can’t be broken down anymore without completely destroying it (nuclear explosion) – They are found on the periodic table ? Currently there...
百度试题 结果1 题目___ of minerals, which are chemical elements or compounds of varying purity .A. The consistency of rocks B. Rocks, consisting C. Rocks consist D. Whereas rocks consist 相关知识点: 试题来源: 解析 C
Halogen, any of the six nonmetallic elements that constitute Group 17 (Group VIIa) of the periodic table. The halogen elements are fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At), and tennessine (Ts). Learn more about the properties
Elementsthatcomposeahumanbody WHATISANATOM?atom •Thesmallestunitofanelementthatmaintainsthepropertiesoftheelement WHATISACOMPOUND?Compound •Asubstancemadeoftwoormoredifferentelementsthatarecombinedchemically •Propertiesofcompoundsmaynotbethesameaspropertiesofelementsthatmakethemup Compounds •Substancescomposed...
ElementsandCompounds •Elements –Allparticlesarealike–Thesmallestparticleofanelementthatisstillrecognizableiscalledanatom–Theycan’tbebrokendownanymorewithoutcompletelydestroyingit(nuclearexplosion)–Theyarefoundontheperiodictable•Currentlythereareabout118elements•Chemicalsymbolsareusedtorepresenttheelements–Example...
Nick Mann is the photographer of The Elements: A Visual Exploration of Every Known Atom in the Universe. Aside from having photographed more elements and compounds than probably anyone in the world, he is an accomplished landscape, sports, and event photographer. He lives in Urbana, Illinois.中...
compounds The List of Elements Element 1:Hydrogen Element 2:Helium Element 3:Lithium Element 4:Beryllium Element 5:Boron Element 6:Carbon Element 7:Nitrogen Element 8:Oxygen Element 9:Fluorine Element 10:Neon Element 11:Sodium Element 12:Magnesium ...