What changes when an ion is made from an atom?A:the number of electrons onlyB:the number of neutrons onlyC:the number of protons onlyD:the number both of protons and of neutrons 相关知识点: 试题来源: 解析 A 考查实际运用。A. 仅电子数量(变化),B. 仅中子数量(变化),C. 仅质子数量(变...
concept of the atom measurements of atomic mass repeating or periodic relationship between the elements Concept of the Atom From the ancient Greeks through today, we have pondered what ordinary matter is made of. To understand the problem, here is a simple demonstration from a book entitled "Th...
Definition of an atom:Atoms are the smallest particles of an element that have the chemical properties of that element. Atoms are therefore extremely small (the hydrogen atom is the smallest) and are sometimes described as the "basic building blocks of matter". This description makes more ...
Answer to: A certain compound is made up of one phosphorus (P) atom, three chlorine (Cl) atoms, and one oxygen (O) atom. What is the chemical...
An atom has three types of very tiny particles called protons, neutrons and electrons. The center of an atom is called the nucleus, and it is made up of protons and neutrons. The electrons in an atom fly around and above the nucleus in a cloud-like formation. The protons have a positiv...
What is the Intel® Atom® Processor? The Intel® Atom® Processor is a family of low-power CPUs designed for use in mobile devices such as smartphones, tablets, and embedded systems. It is optimized for energy efficiency and long battery life. ...
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Atoms are the basic units of matter. Everything in the universe apart from energy is made of matter therefore atoms make up everything in the universe, according toNorthwestern University. The term "atom" comes from the Greek word for indivisible, because it was once thought that atoms were ...
A.The function of an atom.B.The development of atom theory.C.The structure of an atom.D.Methods to find an atom. 相关知识点: 试题来源: 解析 B [听力原文] 1-6 What is an atom The modern view of an atom has come from many fields of chemistry and physics. The idea of an atom c...
of the old quantum truth that a photon, for example, does not exist before it leaves its source and ceases to exist as soon as it is absorbed. Taken to its ultimate consequences, he implies that there is no such thingout thereas a photon, an atom, or space-time: there is only, ...