Reactivity series - List of metals from the most to the least reactive, Unreactive - Metals that do not easily take part in reactions , Metal oxide - Produced when metals react with oxygen, Magnesium - A very reactive metal that produces a bright flame, Potassium  - Found at the top of the reactivity series  , Salt and hydrogen gas - Produced when acids react with metals, Squeaky pop - When you put a lit splint into hydrogen gas,

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