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 ...

All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad, sallallaahu ‘alayhi wa sallam, is His slave and Messenger. The ...

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 ...

Students will learn how to categorize matter as either pure substances or mixtures. Students will apply tests, based on physical properties of matter samples, to determine whether a mixture is ...

Researchers have discovered pure organic substances exhibiting the quantum spin liquid state. Water loses kinetic energy as it is cooled, and when water molecules become unable to move, water becomes ...

The questions in this quiz are suitable for GCSE chemistry students studying pure substances and mixtures, paper chromatography and distillation. If you struggled with the quiz, don't panic - we've ...

Researchers at the University of Tübingen have discovered a novel antibiotic substance from the human nose that can be used against pathogenic bacteria. Named epifadin, the molecule is produced from ...

PROF. TIMMERMANS has chosen as a basis for his monograph on “Chemical Species” the definitions given by Wald in 1897, and used by Ostwald in 1904 in the Faraday Lecture in which he tried to show that ...