T E M P E R A T U R E Heating Curve During the phase phasechange, change, heat is being added added which increases the energy and time is continuing, but the temperature temperature is not increasing. This is why the phase change is a horizontal(flat) (Flat)line line on the graph. horizontal Boiling point Melting point PHASE CHANGE kineticenergy energy As temperature temperature increases, the kinetic of the particles increases. The space between the particles also increases. increases. PHASE CHANGE TIME PHASE CHANGE or Heat/Energy added added phase change, temperature horizontal (flat) line Boiling point kinetic energy temperature increases. T E M P E R A T U R E Cooling Curve Condensation point Phasechange, change heat is being During the phase decreased decreased which decreases the energy while time is continuing, but the temperature temperature is not decreasing. This is why the phase change is a horizontal on the graph. horizontal (Flat) (flat) line line PHASE CHANGE PHASE CHANGE Freezing point kineticenergy energy As temperature decreases, the kinetic of the particles decreases. The space between the particles also decreases. decreases. TIME or Heat/Energy decreased decreased Condensation point PHASE CHANGE horizontal (flat) line PHASE CHANGE Freezing point temperature Phase change, kinetic energy decreases. temperature