IFE Level 3 Certificate in Fire Science, Operations, Fire Safety and Management Unit 1: Fire Engineering Science 2. Mechanics Assessment Criteria Knowledge, Understanding and Skills 2.1 Define and describe the physical properties of matter and apply understanding in carrying out calculations and comparisons • Physical state of matter – solid, liquid, gas, plasma • Mass • Density • Relative density (specific gravity) • Vapour density • Liquids of different density • Gases of different density • Melting, boiling and evaporation • Solubility and miscibility • Viscosity • Conductivity • Hardness 2.2 Understand mechanical terms and applications and apply understanding in carrying out calculations • Newton’s Laws of Motion • Motion, including gravity, speed, velocity and acceleration • Momentum and Force, including Torque • Energy • Work, Power and Mechanical Energy, including Potential Energy and Kinetic Energy • Friction and stopping distances • Simple machines eg. Lever and pulley systems • Mechanical Advantage, Velocity Ratio and Efficiency