Silica is

The element having lowest  melting point is

The size of the charge on an ion is a measure of its:

Sodium ethanoate is :

Mixtures of elements designed to have properties that are useful for a particular purpose

The formula of ammonia is:

In galvanization, the metal coated on iron is:

The shape of ammonia molecule is:

The mineral present in the clay is:

The property of metals to stretch into wires in called: