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Atomic structure

This is a set of keywords from chapter 29 & 30

Atom An atom is the smallest particle of an element which still retains the properties
Proton A positive charge
Electron A negative charge
Neutron A neutral charge
Atomic mass unit Is the measurement of the mass of the atom
Sub-atomic particles Are particles smaller then than atoms
Planetary model All electrons orbit the nucleus
Atomic number A number of protons found in a nucleus
Atomic mass The weight if the atom
N = number Number of electrons on the outer shell
Group The vertical columns of the periodic table
Period The horizontal rows
Alkali metals They are base metals
Alkaline earth metals Metal that normally has a charge of +2
Halogens Electronegative elements
Nobel gases Unreactive elements
Periodic table A table with all the elements
Isotopes Isotopes are atoms of the same element but have different numbers of neutrons
Mendeleev Found the periodic table
Dalton Found the atoms
Neil's Bohr Found planetary model
Created by: Conor.kelly



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