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