Explain, in terms of molecules, why the oil has a much greater density than a gas.
Explain, in terms of molecules, why the oil is not compressible.
The oil’s density is $0.85\,\text{g cm}^{-3}$. Calculate the volume of oil in the pan when the mass is $680\,\text{g}$.
Explain, in terms of molecules or free electrons, how thermal energy is conducted across the metal base of the pan.
Explain how thermal energy is distributed through all the oil in the pan.
Suggest and explain a suitable material to use for the pan handle.
State what is meant by the boiling point.
Calculate the thermal energy required to raise the temperature of $680\,\text{g}$ of oil from $20^\circ\text{C}$ to its boiling point, $260^\circ\text{C}$. The oil has a specific heat capacity of $2.0\,\text{J g}^{-1}\,^\circ\text{C}^{-1}$.
Suggest one reason why the hotplate’s energy output while heating the oil is greater than the value you calculated in (c)(ii).