An atom is regarded as the smallest particle of a chemical element that is existing in nature. All substances are made up of either neutral or ionized atoms. The atoms of all elements have three subatomic particles i.e., electrons,...
What makes atoms spread out around a central atom? Which force keeps electrons orbiting the nucleus: the strong or weak force? What does the electrostatic force do inside the nucleus? What makes up the nucleus of an atom? Which two fundamental forces have been resolved into one?
You can't see atoms, but they make up everything around you: your chair, your desk, the birds outside, even you! Atoms are the foundation of matter, which is everything that makes up the universe around us. Each kind of atom makes up a pure substance called an element. You may hav...
In the world of chemistry, an atom is matter, which makes up everything that is tangible (items you can touch) in the world. One important property of an atom is that it can't be broken down any further with any type of chemical means because it is in its simplest form. What Are ...
more massive than an electron. Atoms always have an equal number of protons and electrons, and the number of protons and neutrons is usually the same as well. Adding a proton to an atom makes a new element, while adding a neutron makes an isotope, or heavier version, of that atom. ...
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百度试题 结果1 题目2. No matter what substance it may be, it(make) up of atom. 相关知识点: 试题来源: 解析 2.is made 反馈 收藏
These questions also pop up in a preprint by Shant Shahbazian of Shahid Beheshti University in Iran – a paper that might be regarded as an exploration of the question ‘what, exactly, is an atom?’2It’s one of the questions that the quantum theory of atoms in molecules (Qtaim) has cl...
This special ability makes semiconductors the perfect brains for electronic devices. Circuits of small semiconductor switches, called transistors, are the heart of computer chips, and enable them to do math and run programs. 半导体使电子产品变得更小、更快、更可靠。 但是,到底是什么使得半导体既能导电...