Pure Substance

A pure substance is a material made up of only one type of particle, which means it has consistent properties throughout. This can be an element, like gold or oxygen, or a compound, like water or salt, where different elements are chemically bonded together. Pure substances have a uniform composition, meaning every sample you take will have the same chemical makeup and characteristics. In contrast, mixtures contain two or more different substances that can be separated easily. Understanding pure substances is fundamental in chemistry and helps us study the behavior of matter in different contexts.