Energy & Temprature

    Cards (11)

    • Particles have kinetic energy and potential energy
    • Kinetic energy = the energy of an object due to its motion
    • Potential energy = the energy due to the relative positions of particles to each other
      Further apart -> greater potential energy
    • Internal energy = total kinetic and potential energies of all the particles that make up a system
    • Specific heat capacity = the amount of energy needed to raise the temperature of 1kg of a substance by 1 degree
    • Increased SHC -> Increased energy needed to heat
    • Change in thermal energy = mass x SHC x temperature change
    • ΔE=\Delta E=mcΔΘ mc\Delta \Theta
      Delta E= change in energy
      Delta Theta = change in temp
      • Specific Latent heat is the amount of energy needed to change 1kg of a substance from one state to another with no change in temperature.
      • This is identified by horizontal lines on a temperature graph
    • SLH of fusion - melting or freezing.
      SLH of vaporisation - evaporating or condensing
    • Energy (E) = Mass (m) x Specific Latent Heat (L)
      E = M x L
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