A container holds 2.0 cm3 of liquid nitrogen at its boiling point of −196 ∘C-196\text{ }^\circ\text{C}−196 ∘C. The liquid nitrogen boils to form 1400 cm3 of nitrogen gas.
What is the reason for this large increase in volume?
The individual nitrogen molecules expand and become much larger in the gaseous state.
The average distance between the nitrogen molecules is much greater in the gaseous state.
A large number of new nitrogen molecules are created during the boiling process.
Nitrogen molecules are stationary in the liquid state and only start moving in the gaseous state.
321 exam-style questions on CIE IGCSE Physics 2.1 Kinetic particle model of matter, covering 2.1.1 States of matter and changes of state, 2.1.2a Particle structure and motion in solids, liquids and gases, 2.1.2b Gas pressure and particle collisions, 2.1.2c Brownian motion, 2.1.3a The absolute scale of temperature, and 2.1.3b Pressure, volume and temperature of a gas. Each one has a worked solution and a mark scheme showing where the marks go.