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