Question

Explain the following and give suitable examples with balanced chemical equations. a. The reaction of metals with oxygen b. The reaction of non-metals with oxygen c. The reaction of metals with water d. The reaction of metals with acid

Answer 1

Answer:

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Answer 2

a)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.

b)Non-metals react with oxygen to form non-metal oxides. Non-metal oxides are acidic in nature. They turn blue litmus to red. Sulphurous acid turns blue litmus to red showing it is an acid and that sulphur dioxide is acidic in nature.

c)When a metal reacts with water, a metal hydroxide and hydrogen are formed. For example: Sodium reacts vigorously with water. Calcium reacts readily with water.

d)When an acid reacts with metal, a salt and hydrogen are produced: acid + metal → salt + hydrogen An example: nitric acid + calcium → calcium nitrate + hydrogen The salt that is produced depends upon which acid and which metal react.