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Heating and Cooling Curves definitions

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  • Heating Curve

    Graph showing temperature increase and phase transitions as heat is absorbed by a substance over time.
  • Cooling Curve

    Graph depicting temperature decrease and phase transitions as heat is released from a substance over time.
  • Phase Change

    Process where a substance transitions between solid, liquid, and gas, with temperature remaining constant.
  • Melting Point

    Specific temperature where a solid becomes a liquid, such as 0°C for water.
  • Boiling Point

    Specific temperature where a liquid becomes a gas, such as 100°C for water.
  • Specific Heat

    Amount of heat required to raise the temperature of one gram of a substance by one degree Celsius.
  • Potential Energy

    Stored energy related to the arrangement or state of particles, increasing during phase changes.
  • Kinetic Energy

    Energy associated with particle motion, directly linked to temperature changes.
  • q = mcΔT

    Equation used to calculate heat absorbed or released during temperature changes, involving mass, specific heat, and temperature change.
  • q = mΔH

    Equation used to calculate heat absorbed or released during phase changes, involving mass and enthalpy change.
  • Enthalpy Change

    Amount of heat absorbed or released during a phase transition, represented as ΔH.
  • Fusion

    Phase transition from solid to liquid, also known as melting, requiring energy absorption.
  • Vaporization

    Phase transition from liquid to gas, requiring significant energy to separate particles.
  • Condensation

    Phase transition from gas to liquid, releasing energy as particles come closer together.
  • Exothermic Process

    Process where heat is released, resulting traditionally in negative q values and bond formation.