Question

Which metal are react with oxide and useful for us ? Explain why ?

Answer 1

Reaction of metals with oxygen

Look at how magnesium reacts with oxygen:



The use of a gas jar full of oxygen can be used to combust other metals. This method can be used to compare different metals and their reactivity with oxygen by observing the reaction.

Metals that react with oxygen produce oxides as their products.

Metal:Observation:Order of reactivity:Product:SodiumBurns quickly with a bright yellow flame.1st - most reactive.Na2O, sodium peroxide - a yellow powder.MagnesiumBurns with a brilliant white flame.2nd.MgO, magnesium oxide - a white ash.IronDoes not burn. Hot metal glows in oxygen and gives off yellow sparks.3rd.Fe203, iron oxide - an orange powder.CopperDoes not burn. Metal eventually coats with a black layer.4th - least reactive.CuO, copper oxide - a black powder.

Of course, other metals react with oxygen, some more than sodium, for example, potassium. Others, such as go





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