chemistry Featured Investigation Understanding Chemistry: Matter, Composition, and Properties Chemistry is fundamentally the study of matter—its composition, properties, and the transformations it undergoes. To develop a deeper unders...
chemistry Oct 1, 2009 States of Matter: Solids, Liquids, Gases, and Plasma Explained Everything you have ever touched, breathed or drunk is matter, and every bit of it exists in one of a small number of forms that scientists ...