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