GCSE Chemistry Revision

Ion
A charged atom
Electron
Atomic particle with charge of -1
Neutron
Atomic particle with no charge
Atomic Mass
The sum of the protons and neutrons in an atom
Halogen
A group 7 element
Atomic Mass
The sum of the protons and neutrons in an atom
Atomic number
The number of protons in an atom.
Alkali Metal
Any group 1 metal
Noble Gases
Any Group 0 element
Covalent
Bonding that involves electron sharing
Electrolysis
Spliting a compound by passing electricity through it.
Formula Mass
The sum of all the masses of the elements in a compound.
Fluorine
The most reactive halogen
Lithium
The least reactive alkali metal
Isotope
Atoms with the same mass but different atomic number
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