Atom The smallest particle

Atom The smallest particle of an element that retains the chemical properties of that element... 

Atom—The smallest particle of an element that cannot be divided or broken up by chemical means. It consists of a central core called the nucleus, which contains protons and neutrons and an outer shell of... 

Elements are made from atoms—the smallest particle of an element that can take part in chemical reactions. Atoms have three main components protons, neutrons and electrons. Protons are positively charged, with a mass similar to that of the hydrogen atom. Neutrons are uncharged and of equal mass to protons. Electrons are about 1/1836 the mass of protons, with a negative charge of equal value to the (positive) charge of protons. 

Frame 1. Matter is made up of very small particles called atoms. The smallest particle of matter is. 

Atom The smallest particle of matter that maintains the property of an element in the periodic table atoms are composed of subatomic particles called electrons, neutrons, and protons, which themselves are composed of even tinier subatomic particles such as quarks. 

Atom. The smallest particle into which an element can be divided whilst still retaining the properties of the element. 

Atom—the smallest particle of a chemical element that still retains the properties of the element. An atom is composed of protons and neutrons in a central nucleus surrounded by electrons. Nearly all of an atom s mass is located in the nucleus. 

In this chapter you will begin studying the atom, the smallest particle of any element. You ll learn about the three parts of the atom. You will also see that different combinations of these parts account for the different elements. In addition, we introduce the arrangement of elements into groups that have similar properties. 

Atom The smallest particle of an element which can exist as an entity. The atom consists of a nucleus containing protons, neutrons and other uncharged particles, surrounded by a cloud of electrons. 

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