Question

I How many react with oxygen ?
Explain using a reaction.

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Answer 1

Answer:

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Answer 2

Answer:

Metals react with oxygen to form metal oxides.These metal oxides are basic in nature.

Metal + Oxygen ————>Metal Oxide

1)When magnesium burns in air,it combines with the oxygen of air to form magnesium oxide(basic oxide)

Magnesium +oxygen ——–> Magnesium Oxide

2 Mg(s) + O2 (g) —–> 2MgO(s)

Magnesium oxide dissolves in water to form magnesium hydroxide solution.

MgO + H20 —–> Mg(OH)2

Magnesium hydroxide turns red litmus to blue which shows that magnesium oxide is a basic oxide.

Explanation:

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