An alkali is derived from the Arabic word 'qali' means ' from the ashes'. As ashes are mixed with water used for cleaning products and are made of alkali materials. It is a basic hydroxide or ionic ...

The periodic table arranges all the chemical elements in a specific way. Patterns are visible in the way that elements behave, and this allows us to make predictions about other elements. Gethin: And ...

ONE of the first inklings that chemistry has an underlying pattern was the discovery, early in the 19th century, of lithium, sodium and potassium—known collectively as the alkali metals. Though ...

The periodic table has been stamped into the minds of countless generations of schoolchildren. Immediately recognised and universally adopted, it has long since achieved iconic status. So why change ...

Try these interactive flashcards based on GCSE chemistry past papers. By working your way through the flashcards created by experts, you can prepare for your chemistry exams and make your revision ...