Includes information about matter, atoms and molecules, elements and compounds, ions and isotopes, balancing chemical equations, types of bonds, chemical reactions, the pH scale, and waves and frequency. Provides the names and symbols of the chemical elements, as well as commonly used formulas. Students can keep all the facts right at their fingertips with this colorful two-sided ready reference card! Comes pre-punched for a three-ring binder and is laminated for years of use. 8 1/2'' x 11'' (22 x 28cm).