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 Gas 5 Solid 6 Chemical change example from a chemical equation 7 Flame appears 8 Physical change 9 Physical change example from a chemical equation 10 Light, heat, sound 11 Chemical change Breaks bonds and forms new substances. Examples of energy X + Y --> XY Chemical property Particles vibrate, particles tightly packed together, holds shape, particles lock in position. Particles are close together, takes shape of the container, particles slide past each other. Examples of matter Physical Properties of matter A + Z --> A + Z Particles are far apart, fills the space the gas is in, particles move around freely Does not re-arrange the atoms or break bonds.