Classification of Matter Flowchart
Matter can be divided into two main categories: pure substances and mixtures. Pure substances have a definite composition and consist of just one unique material. They can be either elements (like oxygen or gold), which contain only one type of atom, or compounds (like salt or baking soda), which contain two or more elements chemically combined.
Mixtures contain two or more substances with variable compositions that can be changed. They're either homogeneous (uniform throughout, like solutions) or heterogeneous (not uniform, with visible different parts). A homogeneous mixture is also called a solution, where components are thoroughly dissolved.
A special case of homogeneous mixtures includes alloys, which are solid-solid solutions like brass or steel, where metals are mixed uniformly at the atomic level.
⚡ Quick Tip: The key difference between compounds and mixtures is chemical bonding—compounds have their elements chemically bonded together in fixed ratios, while mixtures can be physically separated and have variable ratios.
