Metals and Nonmetals

Class: X

Chemistry

Chapter 3

Metals and Non – metals

The elements which have intermediate properties between those of metals and non-metals are called metalloids.

Allotropes are two or more different forms of the same element.

The reaction of metals with oxygen: Almost all metals combine with oxygen to form metal oxides. But all metals do not react with oxygen at the same rate. Different metals show different reactivities towards oxygen.

Metal oxides are basic in nature. But some metal oxides are amphoteric oxides.