MATTER
is anything that occupies space and has mass.
is anything that occupies space and has mass.
A. PURE SUBSTANCES- A pure substance is a sample of matter with both definite and constant composition with distinct chemical properties.
A.1 ELEMENTS - simplest form of a substance that cannot be decomposed by simple chemical means. -Classifications: A.1.1 Metals- A substance with high electrical conductivity, luster, ductility, and malleability. A.1.2 Non-metals- elements which do not exhibit exhibit metallic properties. A.1.3 Metalloids- element with properties intermediate between those of a metal and nonmetal. A.2 COMPOUNDS- is a chemical species that is formed when two or more atoms join together chemically, with covalent or ionic bonds Classifications: A.2.1 Organic * Carbohydrates = Monosaccharide = Disaccharides = Polysaccharides * Fats and Lipids * Proteins * Nucleic acids * Vitamins A.2.2 Inorganic * Acids * Bases * Salts * Oxides |
B. MIXTURE- a substance made by mixing other substances together.
B.1 HETEROGENEOUS MIXTURE - is a mixture having a non-uniform composition. The composition varies from one region to another, with at least two phases that remain separate from each other, with clearly identifiable properties. If you examine a sample of a heterogeneous mixture, you can see the separate components. Classifications: B.1.1 Suspension - is a mixture made up of particles in a fluid. B.1.2 Coarse Mixture - The particles of some mixtures are large enough to see without a microscope. B.1.2 Colloids - A type of homogeneous mixture in which the dispersed particles do not settle out. B.2 HOMOGENEOUS MIXTURE - is a mixture where each particle in the substance is equally distributed. Classification: B.2.1 Solutions- mixture composed of only one phase. In such a mixture, a solute is a substance dissolved in another substance, known as a solvent. |
See some examples