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