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