7.2 - Oxides Flashcards
1
Q
What are oxides? [2]
A
- compounds
- made when metals or non-metals combine with oxygen
2
Q
What are examples of oxides? [2]
A
- carbon dioxide
- calcium oxide
3
Q
What are the two types of oxides? [2]
A
- acidic
- basic
4
Q
How are the two types of oxides classified? [2]
A
- the metallic and non-metallic character of the elements
5
Q
What are acidic oxides and examples? [2]
A
- usually formed by non-metals
- e.g. sulfur dioxide (SO₂) and carbon dioxide (CO₂)
6
Q
What is the reaction between acidic oxide + alkali? [2]
A
acidic oxide + alkali –> salt + water
7
Q
What are basic oxides and examples? [2]
A
- typically formed by metals
- e.g. copper(II) oxide (CuO) and calcium oxide (CaO)
8
Q
What is the reaction between basic oxide + acid? [2]
A
basic oxide + acid –> salt + water
9
Q
What are amphoteric oxides? [2]
A
- oxides that can react with both acids and bases
- to produce a salt and water
10
Q
What are examples of amphoteric oxides? [2]
A
- aluminium oxide (Al₂O₃)
- zince oxide (ZnO)
