An aluminium block has a mass of 0.20 kg. It is heated from 18 ∘C18\ {}^\circ\text{C}18 ∘C to 43 ∘C43\ {}^\circ\text{C}43 ∘C.
The specific heat capacity of aluminium is 900 J/kg ∘C900\ \text{J/kg}\ {}^\circ\text{C}900 J/kg ∘C.
Use the equation: change in thermal energy=mass×specific heat capacity×change in temperature\text{change in thermal energy} = \text{mass} \times \text{specific heat capacity} \times \text{change in temperature}change in thermal energy=mass×specific heat capacity×change in temperature
What is the change in thermal energy of the block?
4500 J4500\ \text{J}4500 J
7740 J7740\ \text{J}7740 J
10 980 J10\,980\ \text{J}10980 J
22 500 J22\,500\ \text{J}22500 J
44 exam-style questions on OCR GCSE Physics 1.2 Changes of state, covering 1.2.1 Conservation of mass during changes of state, 1.2.2 Physical and chemical changes, 1.2.3 Heating, temperature and changes of state, 1.2.4 Specific heat capacity and specific latent heat, 1.2.5 Internal energy and temperature change, and 1.2.6 Energy transfer during a change of state. Each one has a worked solution and a mark scheme showing where the marks go.