A student has a sealed cylinder containing helium gas at room temperature.
Describe the arrangement, separation, and motion of the particles in the helium gas.
The student heats the cylinder. State the effect, if any, of heating on the average kinetic energy of the particles in the gas.
State the name of the temperature at which the particles of a gas would have the minimum possible kinetic energy.
State the value of this temperature on the Celsius scale. Include the unit.
The cylinder is designed to minimise the absorption of thermal radiation from its surroundings. State two features of a surface that make it a poor absorber of thermal radiation.
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.