Complete the following sentences about the kinetic particle model of gases.
(i) Compared to a liquid, the average distance between particles in a gas is much …………\dots\dots\dots\dots………… (ii) Except during collisions, the attractive forces between the particles of an ideal gas are assumed to be …………\dots\dots\dots\dots………… (iii) The pressure of a gas on the walls of its container is caused by the gas particles constantly …………\dots\dots\dots\dots………… with the walls. (iv) If the temperature of a gas in a sealed, rigid container increases, the pressure of the gas …………\dots\dots\dots\dots…………
(i) State the value of the temperature known as absolute zero in kelvin (\text{K}).
absolute zero=………… K \text{absolute zero} = \dots\dots\dots\dots \text{ K} absolute zero=………… K(ii) State the value of absolute zero in degrees Celsius (^{\circ}\text{C}).
absolute zero=…………∘C \text{absolute zero} = \dots\dots\dots\dots ^{\circ}\text{C} absolute zero=…………∘C321 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.