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Atomic structure
Chapters 29 & 30
| Term | Definition |
|---|---|
| Atom | The smallest part of an element that can exist which retains the properties of that element. |
| Proton | Protons carry a charge of +1 |
| Electron | Carry a charge of -1 |
| Neutron | Doesn't carry a charge |
| Atomic mass unit | Protons and neutrons have a mass of 1 a.m.u. Electrons have a mass of 1-1840 a.m.u |
| Sub atomic particles | Tint particles inside an atom |
| Planetary model | The 2d drawing of an atom |
| Atomic number | The number over the element sign. It's also the number the element has on the periodic table. It is also the number of electrons and protons |
| Atomic mass | The number underneath the element symbol. |
| N= number | Is which line the element is on on the periodic table |
| Group | The group/ category the element is in eg group ii |
| Period | In the periodic table |
| Alkali metals | A group in the periodic table |
| Alkaline earth metal | A group in the periodic table |
| Halogens | Gasses in the periodic table |
| Nobel gasses | Gasses in the periodic table |
| Periodic table | An arrangement of the elements in order of an increasing atomic number |
| Isotopes | Atoms of the same element that have different numbers of neutrons in their nucleas. |
| Mandeleev | Arranged all the elements on the periodic table |
| Dalton | Discovered the atomic structure |
| Neil's Bohr | Designed the planetary model of the atom. Aka Bohr diagrams |
Created by:
Megancallan
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