Questions and Answers
Which of the following oxides is basic in nature?
What is produced when zinc oxide reacts with hydrochloric acid?
Which statement about amphoteric oxides is true?
What gas is produced when a metal reacts with water during the formation of a metal oxide?
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Which of the following is a neutral oxide?
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Which metal oxide is considered non-metal oxide?
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Which reaction demonstrates the amphoteric nature of Al2O3?
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What is the general outcome when a metal reacts with steam?
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Which of the following metals is known for its poor thermal conductivity?
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Which of the following statements is true regarding most metal oxides?
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Study Notes
Oxides of Metals
- Certain metal oxides dissolve in water to form alkalis, e.g., Sodium oxide (Na2O) and Potassium oxide (K2O) produce Sodium hydroxide (NaOH) and Potassium hydroxide (KOH) respectively.
Amphoteric Nature of Al2O3 and ZnO
- Aluminium oxide (Al2O3) reacts with hydrochloric acid to form Aluminium chloride and water, showcasing its acidic behavior.
- Al2O3 also reacts with sodium hydroxide, behaving as a base to produce sodium meta aluminate and water.
- Zinc oxide (ZnO) reacts with hydrochloric acid, forming Zinc chloride and water, indicating its acidic properties.
- ZnO reacts with sodium hydroxide to yield sodium zincate and water, demonstrating its basic characteristics.
Quick Tips on Oxide Types
- Metal oxides are basic in nature (e.g., CaO, MgO, CuO).
- Non-metal oxides are acidic in nature (e.g., CO2, SO2, SO3).
- Amphoteric oxides display both acidic and basic properties (e.g., ZnO, Al2O3, SnO, PbO).
- Neutral oxides do not display acidic or basic properties (e.g., H2O, CO, N2O, NO).
Reaction of Metals with Water
- Metals react with water to produce metal oxides and hydrogen gas; this may vary with conditions (steam or cold/boiling water).
- Soluble metal oxides will further react with water to form metal hydroxides.
Thermal Conductivity of Metals
- Thermal conductivity refers to a metal's ability to conduct heat effectively.
- Metals such as silver, gold, iron, and copper are excellent heat conductors.
- Conversely, materials like wood, paper, and glass exhibit poor thermal conductivity.
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Description
Test your knowledge on the reactions of metal oxides, including their solubility in water and amphoteric nature. This quiz covers key equations and concepts related to sodium oxide, potassium oxide, and aluminium oxide. Challenge yourself and see how well you understand these important chemical reactions!
