Properties of Water: Physics Practicals

Investigating the Properties of Water

• Describe that when substances melt, freeze, evaporate, boil, condense or sublimate mass is conserved and that these physical changes differ from some chemical changes because the material recovers its original properties if the change is reversed.
• Explain how heating a system will change the energy stored within the system and raise its temperature or produce changes of state.
• Define the terms specific heat capacity and specific latent heat and explain the differences between them
• Use the equation:
  change in thermal energy (joule, J) = mass (kilogram, kg) × specific heat capacity (joule per kilogram degree Celsius, J/kg °C) × change in temperature (degree Celsius, °C)
  ⃤ Q = m × c × ⃤ θ
• Use the equation:
  thermal energy for a change of state (joule , J) = mass (kilogram, kg) × specific latent heat (joule per kilogram, J/kg)
  Q = m × L
• Explain ways of reducing unwanted energy transfer through thermal insulation.

Edexcel (9-1) Combined Science & GCSE Physics – Investigating the properties of water
investigating the properties of water, so you can obtain accurate results in your own experiments.

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