Oxides

Definition

Oxides are compounds that contain at least one oxygen atom and one other element. They are typically formed through the reaction of oxygen with metals, metalloids, or nonmetals.

5 Must Know Facts For Your Next Test

1. Oxides can be classified as acidic, basic, amphoteric, or neutral based on their acid-base properties.
2. Metal oxides generally form basic oxides which react with acids to form salts and water.
3. Nonmetal oxides usually form acidic oxides that react with bases to produce salts and water.
4. Amphoteric oxides can act as both acids and bases depending on the reacting substance.
5. Neutral oxides do not exhibit acidic or basic properties; examples include nitrous oxide (N₂O) and carbon monoxide (CO).

Review Questions

• What types of chemical reactions typically produce oxides?
• How do metal oxides differ from nonmetal oxides in terms of their chemical behavior?
• Provide an example of an amphoteric oxide and explain its dual behavior.

Related terms

Acidic Oxide: An oxide that reacts with water to form an acid or with a base to form a salt. Example: $SO_2$.

Basic Oxide: $A$ oxide that reacts with acids to form salt and water. Example: $CaO$.

Amphoteric Oxide: $An$ oxide that can react both as an acid and a base. Example: $Al_2O_3$.