For example, shops sell cartons labelled as ‘pure' orange juice ... However, the juice is not pure in the chemical sense, because it contains different substances mixed together.

Chemical substances are often called 'pure' to set them apart from mixtures. A common example of a chemical substance is pure water; it has the same properties and the same ratio of hydrogen to oxygen ...

If the matter sample is classified as a pure substance, you will determine whether the sample ... For in-person lab: Students should wear chemical splash goggles, and follow all other normal ...

A chemical element is one of those squares ... We also, confusingly, tend to refer to pure substances made of one kind of atom, like chlorine gas, as elements. But these are very different from ...