For example, pure orange juice is a mixture of compounds and bottled water still has impurities. In science, the word pure means a substance made from one element or just one compound. Remember ...

Compounds are a second type of pure substance. Compounds always have the same ratio of elements. For example, Pyrite will always exist as one Fe atom for every two S atoms. Pure substances, which are ...

Let’s take chlorine as an example. It is positioned ... We also, confusingly, tend to refer to pure substances made of one kind of atom, like chlorine gas, as elements. But these are very ...

For example, pure orange juice is a mixture of compounds and bottled water still has impurities. In science, the word pure means a substance made from one element or just one compound. Remember ...