Properties and Reactions of Metal Oxides

The video explores whether magnesium oxide (MgO) is acidic, basic, or neutral. MgO is identified as a basic metal oxide due to its composition of a metal and a non-metal, forming an ionic compound. When MgO is added to water, it forms magnesium hydroxide, which is slightly soluble and makes the water basic. In reaction with hydrochloric acid, MgO acts as a base, neutralizing the acid and forming a salt. The video also discusses the trend of metal and non-metal oxides across the periodic table, highlighting that metal oxides are generally basic, while non-metal oxides are more acidic.

What type of compound is MgO?

• Organic compound

• Covalent compound

• Metallic compound

• Ionic compound

What is the general nature of metal oxides like MgO?

• Acidic

• Basic

• Amphoteric

• Neutral

What is formed when MgO reacts with water?

• Magnesium hydroxide

• Magnesium sulfate

• Magnesium carbonate

• Magnesium chloride

Why does magnesium hydroxide make water slightly basic?

• It absorbs hydrogen ions

• It releases hydrogen ions

• It absorbs hydroxide ions

• It releases hydroxide ions

What is the result of the reaction between MgO and hydrochloric acid?

• Formation of an acid

• Formation of a salt and water

• Formation of a base

• No reaction

In the reaction with hydrochloric acid, what role does MgO play?

• Oxidizing agent

• Catalyst

• Base

• Acid

What trend is observed for metal oxides across period three of the periodic table?

• They become more acidic

• They become more basic

• They become more amphoteric

• They become more neutral

Where does aluminum oxide fall in the trend of period three oxides?

• Neutral

• More basic

• More acidic

• Amphoteric

What is the expected nature of Na2O compared to MgO?

• More basic

• More acidic

• More neutral

• More amphoteric

What is the overall conclusion about MgO's nature?

• It is amphoteric

• It is acidic

• It is basic

• It is neutral