Which kind of molecules is made up of atoms of the same element?
Fill in the following blanks with suitable words :
(a) An element is made up of only one kind of ___
(b) Brine is a ___ whereas alcohol is a ___
(c) Brass is an alloy which is considered a ___
(d) The three important metalloids are ___, ___ and___
(e) The elements which are sonorous are called___