4. Water is a compound containing the _elements (element) of hydrogen and oxygen. 相关知识点: 试题来源: 解析 答案见上4.elements〔提示:句意:水是含有氢元素和氧元素的化 合物。element n. 元素。 根据后面的 hydrogen 和 oxygen 可知,应用复数形式,故填 elements。 ] ...
百度试题 题目The solute is an element or compound present in the greatest amount. 正确___相关知识点: 试题来源: 解析 错误 反馈 收藏
The main classifications of matter include the categories element and compound, either of which may also be called a substance (which is a less specific term), and mixture, of which there are also many sub-categories.Definition of a (Chemical) Mixture:...
element vs. compound Anelementis a substance that cannot be separated into simpler substances by chemical means. An element consists of anatomwith a unique combination ofprotons,neutrons, andelectrons. For example, the element hydrogen has one proton, one neutron, and one electron. We cannot use ...
An element is a substance which is constituted of only one kind of atoms and cannot be further divided by any physical or chemical means. A compound is a substance which is formed due to the chemical combination of two or more elements a definite pro
A reaction in which one element takes the place of another in a compound is called a ___. A. combination reaction B. decomposition reaction C. displacement reaction D. redox reaction 相关知识点: 试题来源: 解析 C。displacement reaction 是置换反应,即一种元素取代化合物中的另一种元素;combinatio...
百度试题 结果1 题目iv Allotropy is the property of: B(A)Compound(B)Element(C)Atom(D)Mixture 相关知识点: 试题来源: 解析 B 反馈 收藏
All organic compounds contain the element a. C. b. N. c. Ca. d. Na. Organic Molecules Organic molecules are those molecules that occur in all the living systems. They are also known as biomolecules. Biomolecules are necessary for the sustenance of...
A method for the production of an element or a compound of an element which, with an isotope of this element is enrichedWILDEN, ROLF JOSEF, ROETGENLYDTIN, HANS-JUERGEN, STOLBERGSEVERIN, PETRUS JOHANNES WILHELMUS, EINDHOVEN NIEDERLANDE
Is concrete classified as a pure substance (element or compound) or a mixture? Explain.Question:Is concrete classified as a pure substance (element or compound) or a mixture? Explain.Mixtures and Substances.We constantly prepare mixtures, for example, a person who washes h...