Mixtures: Have you ever noticed the word ‘pure’ written on the packs of milk? For a layman, it means that it is not adulterated. However, in scientific terms, milk is actually a mixture of various ...

There are different ways to separate mixtures, for example by filtration, crystallisation, distillation, or chromatography. The method chosen depends upon the type of mixture. The periodic table - OCR ...

There are lots of different substances but only just over a hundred elements. An element is a substance that is made up of only one kind of atom. The atoms in a particular element are the same as each ...