Inorganic matter refers to substances that do not contain carbon and are not alive. Some synonyms for inorganic matter include mineral matter, inorganic substances, and non-living matter. Mineral matter specifically refers to the minerals found in rock formations and soil. Inorganic substances can include chemicals like chlorine and sodium, as well as minerals like quartz and feldspar. Non-living matter encompasses all substances that do not possess life, including things like water, air, and sand. When discussing soil science, the term "mineral soil" is often used to describe the inorganic matter portion of the soil composition.