youtubeWhat Is An Atom IB化学公开课 原子, 视频播放量 141、弹幕量 0、点赞数 2、投硬币枚数 0、收藏人数 0、转发人数 2, 视频作者 Chembond化学社, 作者简介 清华大学博士,相关视频:高中IB化学公开课 化学结构系列 What Is An Element, Mixture And Compound_ 单质 化
If you do the same thing with any element, you will reach an indivisible part that has the same properties of the element, like the single paper clip. This indivisible part is called an atom. The idea of the atom was first devised by Democritus in 530 BC. In 1808, an English school ...
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 have heard of oxygen, lead, and gold. Well, these are all examples of elements. Can you believe that a pure gold ...
For example, plutonium, which is one of the heaviest elements, weighs more than 200 times as much as the lightest element of hydrogen. The diameter of a plutonium atom is only approximately three times the diameter of a hydrogen atom. What Are Some Examples of Atoms? What Are Some Examples...
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 ...
What makes one atom different from another? What is the difference between a molecule and an atom? What is the Rutherford model of the atom? What are the three particles of an atom? What is a reactive atom? What is the difference between an atom and an element? Which is a substance ...
They combine to produce larger compounds, decompose to form smaller ones, or swap one element for another to produce a chemical with different properties. These dynamic interactions are happening all around us, all the time. Atom anatomy : Oxygen (Image source: Getty Images) Nucleus The ...
An atom is the smallest unit of ordinary matter that retains the properties of an element. Comprising a central nucleus surrounded by a cloud of electrons, atoms are the fundamental building blocks of all substances in the universe. The nucleus contains protons, which are positively charged particl...
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. ...
An atom of an element has the following ground-state configuration: Ar 3d10 4s2 4p6. If the element is in Group VIA, what is the symbol of the element? What are the first 20 elements of periodic table (group wise)? Which of the following is true for the element silicon? a. element...