Condensed state of matter - matter where the particles are close together (solids or liquids) Phase - A distinct state of matter in a system. Phase Diagram - A graph, with axes representing temperature and pressure, showing the equilibrium conditions for a given substance to be a solid, liquid or gas.Heat and States of Matter T3 Section 2 States of Matter A. States of matter—solid, liquid, gas, plasma 1. Solid state—particles are closely packed together in a specific type of geometric arrangement 2. Liquid state—a solid begins to liquefy at the melting point as the particles gain enough energy to overcome their ordered arrangement a.Matter is the stuff that all things are made of, and matter exists in different states with very different properties. Materials are provided that discuss the building blocks of matter, atoms, elements, and molecules, and the Periodic Table, a list of elements arranged according to their properties. Student Review Sheet Matter & Energy Semester B Examination 3 Montgomery County Public Schools periodic table. predict the oxidation number of an element based on its location in the periodic table. predict the number of atoms in a compound using oxidation numbers. Interactive Textbook 21 States of Matter SECTION 1 Name Class Date Three States of Matter continued THE UNIQUE PROPERTIES OF LIQUIDS Liquids have special properties that the other states of matter do not have. One special property of liquids is sur-face tension. Surface tension is a force that acts on the particles at the surface of a liquid.