Title
La materia : bloque básico del universo
Text in Spanish and English
Text in English : Matter : building block of the universe
Includes bibliographical references index
General properties of matter: Matter; Mass and weight; Volume and density — Physical and chemical changes: Phases of matter; Phase changes; Chemical properties and changes — Mixtures, elements, and compounds: Classes of matter; Mixtures; Elements; Compounds — Atoms, building blocks of matter: Atomic model of matter; Structure of the atom; Forces within the atom — Classification of elements, the periodic table: Arranging the elements; Design of the periodic table; Chemical families; Periodic properties of the elements — Science gazette