Physics > GCSE MARK SCHEME > Particle Model of Matter Knowledge Questions and Answers. 100% Approved Pass Rate. (All)

Particle Model of Matter Knowledge Questions and Answers. 100% Approved Pass Rate.

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Explain what is meant by internal energy. The energy stored inside a system by the particles (atoms and molecules) that make up the system. Internal energy is the total kinetic energy and potential... energy of all of the particles that make up the system. 2 Explain the effect that heating has on a system. Heating increases the energy of the particles that make up the system. This either raises the temperature of the system or causes a change of state. 3 Describe the different changes of state that a system can undergo when heated. Melting - from solid to liquid. Boiling - from liquid to gas. Sublimation - from solid to gas. 4 Describe the different changes of state that a system can undergo when it cools. Freezing - from liquid to solid. Condensation - from gas to liquid. Deposition - from gas to solid. 5 Describe the factors that affect how much the temperature of a substance increases when it is heated. The mass of the substance, the type of material and the energy input to the system. 6 Explain what is meant by the 'specific heat capacity' of a substance. The amount of en [Show More]

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