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Atomic structure

Chapters 29 & 30

TermDefinition
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