Liquid nitrogen boils at −196 ∘C-196\ ^\circ\text{C}−196 ∘C. A student pours liquid nitrogen at −196 ∘C-196\ ^\circ\text{C}−196 ∘C into an open flask. The nitrogen boils and turns into nitrogen gas at −196 ∘C-196\ ^\circ\text{C}−196 ∘C.
Explain how the internal energy of the nitrogen changes as it turns from a liquid into a gas.
All of the nitrogen boils away and the gas then warms up to room temperature.
Describe what happens to the energy stores of the nitrogen particles while the gas warms up.
40 exam-style questions on AQA GCSE Physics 3.2 Internal energy and energy transfers, covering 3.2.1 Internal energy, 3.2.2 Temperature changes in a system and specific heat capacity, and 3.2.3 Changes of state and specific latent heat. Each one has a worked solution and a mark scheme showing where the marks go.