A metal pot is placed on an electric stovetop. The pot contains water which is heated to a boil.
Thermal energy is transferred through the metal pot by conduction. State and explain the two mechanisms by which thermal energy is conducted in a metal.
When water boils, it changes from a liquid to a gas. Explain, in terms of forces and distances between particles, why the gas occupies a much greater volume than the liquid.
State two differences between boiling and evaporation.
The water is replaced with 180 cm3180\text{ cm}^3180 cm3 of canola oil.
The initial temperature of the canola oil is 20.0∘C20.0^\circ\text{C}20.0∘C. The oil is heated until it reaches a temperature of 190.0∘C190.0^\circ\text{C}190.0∘C.
The temperature reaches 190.0∘C190.0^\circ\text{C}190.0∘C when 53 800 J53\,800\text{ J}53800 J of thermal energy has been transferred to it. The density of canola oil is 0.920 g/cm30.920\text{ g/cm}^30.920 g/cm3.
Calculate the specific heat capacity of canola oil. Give your answer to 3 significant figures and include the unit.
119 exam-style questions on CIE IGCSE Physics 2.2.2a Internal energy and temperature. Each one has a worked solution and a mark scheme showing where the marks go.