Question

what happens when metals reacts with oxygen,water? write it's chemical reactions?​

Answer 1

Answer:

When a metal reacts with oxygen, a metal oxide forms. The general equation for this reaction is: metal + oxygen → metal oxide. Rust is a form of iron oxide and it forms slowly when iron is exposed to air.

Explanation:

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Answer 2

Answer:

Explanation:

Reactions of metals with water

When a metal reacts with water, a metal hydroxide and hydrogen are formed.

For example:

Sodium reacts vigorously with water.

sodium + water ➞ sodium hydroxide + hydrogen

2Na(s) + 2H2O(l) ➞ 2NaOH(aq) + H2(g)

Reaction of metals with oxygen

Many metals react with oxygen to form metal oxides.The change from shiny to dull is called tarnishing.

For example:

Potassium burns with a lilac flame when heated in air.

potassium + oxygen ➞ potassium oxide

4K(s) + O2(g) ➞ 2K2O(s)