A student compares insulation materials using identical beakers of water. Which pair of quantities should be kept the same to make the comparison valid?
Mass of water and initial water temperature
Mass of water and final water temperature
Initial water temperature and temperature decrease
Final water temperature and temperature decrease
110 exam-style questions on Edexcel GCSE Physics 14.2 Specific heat capacity and latent heat, covering 14.2.1 Heating, temperature and changes of state, 14.2.2 Specific heat capacity and specific latent heat, 14.2.3 Specific heat capacity calculation, 14.2.4 Specific latent heat calculation, and 14.2.5 Reducing energy transfer through thermal insulation. Each one has a worked solution and a mark scheme showing where the marks go.