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DEMO|TOPIC 09-COMPOUNDS OF METALS

COMPOUNDS OF METALS

A. METAL OXIDE

An oxide is a compound of oxygen with another element.

Preparation of oxides:

There are two ways of preparing metal oxides

a) DIRECT METHOD

It involves direct combination of metal with oxygen

1. INDIRECT METHOD

It involves thermal decomposition of a salt of carbonate, hydroxide (I) nitrates

CLASSIFICATION OF METAL OXIDES

BASIC OXIDES

Are oxides of metal when reacts with acid forms salts

Examples are MgO, CaO, Na₂O, K₂O

ACIDIC OXIDES

Are oxides of non metals and when dissolved in water form solution

Examples are CO₂, NO₂, SO₂

AMPHOTERIC OXIDES

These are oxides which have both basic and acidic properties

(H neutralize both acidic and Alkali to form salt)

Examples are ZnO, Al₂O₃ and PbO

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𝓢𝓬𝓱𝓸𝓸𝓵 𝓛𝓲𝓫𝓻𝓪𝓻𝔂

DEMO|TOPIC 09-COMPOUNDS OF METALS

COMPOUNDS OF METALS

CLASSIFICATION OF METAL OXIDES

READ MORE

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