An investigator has a container of liquid water at room temperature.
Describe the arrangement, separation and motion of the particles in a liquid.
The investigator heats the liquid. State the effect, if any, of heating on the kinetic energy of the particles in the liquid.
State the name of the temperature at which the particles have their minimum possible kinetic energy.
State the value of this temperature in degrees Celsius, including the unit.
The container is designed to minimize heat loss by thermal radiation from its surface.
State two features of a surface that make it a poor emitter 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.