Relier Pairs Physical and Chemical ChangesVersion en ligne Study material over physical and chemical changes. par Cambria Crabtree 1 Elements, soil, gases, air, celestial objects 2 Chemical change example from a chemical equation 3 Physical change 4 Solid 5 Chemical change 6 Flame appears 7 Liquid 8 Physical change example from a chemical equation 9 Light, heat, sound 10 Gas 11 Density, boiling point, melting point, solubility Physical Properties of matter Particles are far apart, fills the space the gas is in, particles move around freely Examples of energy Examples of matter A + Z --> A + Z Chemical property Particles vibrate, particles tightly packed together, holds shape, particles lock in position. X + Y --> XY Breaks bonds and forms new substances. Does not re-arrange the atoms or break bonds. Particles are close together, takes shape of the container, particles slide past each other.