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The Atom
| Term | Definition |
|---|---|
| Atom | The basic particle from which all elements are made ; The smallest particle of an element that has the properties of that element. |
| Electron | A tiny ; negatively charged particle that moves around the outside of the nucleus of an atom |
| Nucleus | The central core of an atom that can change one element into another element . |
| Proton | Small, positively charged protons that are found in the nucleus of an atom. |
| Energy Level | A region of an atom in which electrons of the same energy are likely to be found. |
| Neutron | A small particle in the nucleus of the atom , with no electrical charge . |
| Atomic number | The number of protons in the nucleus of an atom. |
| Isotopes | An atom with the same number of protons and a different number of neutrons from other atoms of the same element |
| Mass Number | The sum of protons and neutrons in the nucleus of an atom . |
| Atomic mass | The average mass of all isotopes of an element. |
| Periodic table | An arrangement of the elements showing the repeating pattern of their properties. |
| Chemical Symbol | A one or two letter representation of an element. |
| Periods | A horizontal row of elements in the periodic table. |
| Groups | Elements in the same vertical column of the periodic table: also called : Family . |
Created by:
ermang
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