Final answer:
The two broadest categories of matter are pure substances, including elements and compounds, and mixtures, which can be either homogeneous or heterogeneous.
Step-by-step explanation:
The two broadest categories of matter are pure substances and mixtures. A pure substance exhibits a constant composition and properties are uniform throughout the sample. Such substances include elements, which consist of a single type of atom, and compounds, which are made from more than one type of atom bonded together.
Mixtures, however, are physical combinations of two or more pure substances, and can be either homogeneous, where the mixture is uniform throughout, or heterogeneous, where the composition is not uniform and varies from one part of the mixture to another.
Matter can be classified into two broad categories: pure substances and mixtures. A pure substance is a form of matter that has a constant composition and properties that are constant throughout the sample.
Mixtures are physical combinations of two or more elements and/or compounds. Mixtures can be classified as homogeneous or heterogeneous.