In everyday life, for example on food packaging, the word ‘pure’ usually means that something is in its natural state without anything added to it, like sweeteners or preservatives. Natural fruit ...

Pure and Mixed Substances: In the world of chemistry, substances are broadly classified into two fundamental categories: pure and mixed substances. Understanding these distinctions is crucial as they ...

The questions in this quiz are suitable for GCSE combined science students studying pure substances, chromatography, and testing for gases. If you struggled with the quiz, don't panic - we've got you!