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==Key Stage 3==
===Meaning===
[[File:ReactivitySeriesReactivity Series.png|right|300px|thumb|The symbols and [[Atomic Number|atomic numbers]] of [[element]]s in the '''reactivity series'''.]]
The [[Reactivity Series]] is a list of [[element]]s in order of their [[reactivity]].
===About The Reactivity Series===
: The '''Reactivity Series''' is used to predict the outcome of [[Displacement Reaction]]s. [[Element]]s higher on the '''reactivity series''' will [[Displacement Reaction|displace]] those lower down on the '''reactivity series'''.