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