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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 |