| 0620-IGCSE-CHEMISTRY
PAPER-2-TOPIC-WISE PAST PAPERS / PAPER-2-THE PARTICULATE NATURE OF MATTER
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Syllabus requirements for the topic: The particulate nature of matter • State the distinguishing properties of solids, liquids and gases • Describe the structure of solids, liquids and gases in terms of particle separation, arrangement and types of motion • Describe changes of state in terms of melting, boiling, evaporation, freezing, condensation and sublimation • Describe qualitatively the pressure and temperature of a gas in terms of the motion of its particles • Show an understanding of the random motion of particles in a suspension (sometimes known as Brownian motion) as evidence for the kinetic particle (atoms, molecules or ions) model of matter • Describe and explain diffusion Supplement • Explain changes of state in terms of the kinetic theory • Describe and explain Brownian motion in terms of random molecular bombardment • State evidence for Brownian motion • Describe and explain dependence of rate of diffusion on molecular mass

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