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Atomic Structure
A set of key words from chapter 29 & 30
| Term | Definition |
|---|---|
| Atom | The smallest particle of an element |
| Proton | Sub-atomic particle with a positive charge |
| Electron | Sub-atomic particle with a negative charge |
| Neutron | Sub-atomic particle with a neutral charge |
| Atomic mass unit | |
| Sub-Atomic Particles | |
| Planetary Model | |
| Atomic number | The number that shows where the element is in the periodic table and shows how many protons and electrons are in the atom. |
| Atomic mass | |
| N= any number (e.g 1,2,3) | |
| Group | Column going down in the periodic table. Elements in the same group are similar. |
| Period | |
| Alkali metal | |
| Alkaline earth metal | |
| Halogens | |
| Nobel gases | |
| Periodic table | |
| Isotopes | |
| Mendelev | |
| Dalton | |
| Neils Bohr |