TYPES OF OXIDES An oxide is a compound of Oxygen and another element (e.g. through the process of Combustion) Metals form Metal Oxides and Non-Metals form.

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Presentation transcript:

TYPES OF OXIDES An oxide is a compound of Oxygen and another element (e.g. through the process of Combustion) Metals form Metal Oxides and Non-Metals form Non-Metal Oxides Oxides can be classified as either Acidic, Basic, Amphoteric or Neutral Nature of the oxides of the elements across the periodic table from left to right changes from Basic –> Amphoteric –> Acidic

ACIDIC OXIDES  ACIDIC OXIDES  Examples: SO 2, SO 3, CO 2, NO 2  Properties: 1. Do not react with acids. 2. React with bases and alkalis to form salt & water. 3. Dissolve in water to form acidic solutions. 4. Usually gases at room temp.

BASIC OXIDES  Examples: Na2O, CaO, MgO, FeO, CuO  Properties: 1. Do not react with bases. 2. React with acids to form salt & water. 3. Basic Oxides are usually insoluble in water. Those that dissolve in water forms alkaline solutions.  NEUTRAL OXIDES  Examples: CO, NO, H 2 O  Properties: 1. Neutral pH AMPHOTERIC OXIDES Examples: Oxides formed with metals near “STEPS” such as ZnO, Al 2 O 3, PbO, Properties: 1. React with both acids and bases to form salt & water