Compounds may be broken down into simple substances by

Wolfram is a chemical name of an element called

A greenish yellow poisonous gas is

"There are only four elements including air, earth, water and fire", it was believed by

Non metals include

Nonmetals are

Density, boiling point and conductivity of heat are all

The process which involves in breaking down the element by passing electricity through it is called

Chinese thought that the number of elements were

Low densities, low melting, low boiling point and poor conductivity are found in

Air ships and balloons use gas called

A compound which yields in black solid, copper oxide and colorless gas carbon dioxide on heating, is

A very light and inert gas is

The properties of compound, as compare to properties of its constituents are

Iron sulfide is formed when iron and sulphur are together

The general properties of metals are

The building blocks of all matter including living and non living things are

To make specific compound, elements are mixed in a fix proportion by

The dense white fumes which can be seen upon gas ammonia are due to mixing of

With one hundred elements the compounds that may be made, will be above