Companion PDF worksheet for Edexcel IGCSE Physics Lecture 23 - Changes of State. Contains short answer questions, an activity requiring lateral thinking and exam-style questions.
Specification Point 5.8P - Explain why heating a system will change the energy stored within the system and raise its temperature or produce changes of state.
Specification Point 5.9P - Describe the changes that occur when a solid melts to form a liquid, and when a liquid evaporates or boils to form a gas.
Specification Point 5.10P - Describe the arrangement and motion of particles in solids, liquids and gases.
Specification Point 5.11P - Practical: obtain a temperature–time graph to show the constant temperature during a change of state.
Specification Point 5.12P - Know that specific heat capacity is the energy required to change the temperature of an object by one degree celsius per kg of mass.
Specification Point 5.13P - Use an equation to derive the change in thermal energy in a system.
Specification Point 5.14P - Practical: investigate the specific heat capacity of materials including water and some solids.
Complete set of Chapter 5 Worksheets are available.
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