The elements which are brittle, non-lustrous, non-malleable, non-ductile and poor conductors of heat and electricity are called non-metals. Non-metals are dull in appearance.

Alloy is a homogeneous mixture of metal with other metals or non-metals. The resulting mixture forms a substance with properties that often differ from those of the pure metals, such as increased strength or hardness. Eg. Bronze, brass, etc.

Write names of any two metalloids.

The elements which show some properties of metal and other properties of non-metal, which means they show the properties of both metals and non-metals are called metalloids. The examples of metalloids are the following: (I) Silicon (II) Germanium (III) Arsenic