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Conceptual understanding: changes in internal energy alter the pattern of molecular motion to change the state of matter (form) or the amount of molecular motion (temperature).
Conceptual understanding: changes in internal energy alter the pattern of molecular motion to change the state of matter (form) or the amount of molecular motion (temperature).
Modelling the changes of motion of particles at a microscopic levels predicts macroscopic properties.
Modelling the changes of motion of particles at a microscopic levels predicts macroscopic properties.
Knowledge:
Knowledge:
3.1 - Thermal Concepts
Molecular theory of solids, liquids and gases
Temperature and absolute temperature
Internal energy
Specific heat capacity
Phase change
Specific latent heat
3.2 - Modelling a gas
Pressure
Equation of state for an ideal gas
Kinetic model of an ideal gas
Mole, molar mass and the Avogadro constant
Differences between real and ideal gases
Applications and skills:
Applications and skills:
3.1 - Thermal Concepts
Describing temperature change in terms of internal energy
Using Kelvin and Celsius temperature scales and converting between them
Applying the calorimetric techniques of specific heat capacity or specific latent heat experimentally
Describing phase change in terms of molecular behaviour
Sketching and interpreting phase change graphs
Calculating energy changes involving specific heat capacity and specific latent heat of fusion and vaporization
3.2 - Modelling a gas
Solving problems using the equation of state for an ideal gas and gas laws
Sketching and interpreting changes of state of an ideal gas on pressure– volume, pressure–temperature and volume–temperature diagrams
Investigating at least one gas law experimentally
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