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  • IGCSE Edexcel
  • Physics
  • 5. Solids, Liquids & Gases

Physics

  • IGCSE Edexcel
  • Revision Notes

5. Solids, Liquids & Gases


5.1 Density and Pressure>5.2 Change of State>5.3 Ideal Gas Molecules>

1. Forces & Motion

1.1 Movement and Position >1.2 Forces, Movement, Shape and Momentum >

2. Electricity

2.1 Mains Electricity >2.2 Energy and Voltage in Circuits >2.3 Energy Charge >

3. Waves

3.1 Properties of Waves >3.2 The Electromagnetic Spectrum >3.3 Light and Sound >

4. Energy Resources & Energy Transfers

4.1 Energy Transfers >4.2 Work and Power >4.3 Energy Resources and Electricity Generation >

6. Magnetism & Electromagnetism

6.1 Magnetism >6.2 Electromagnetism >6.3 Electromagnetic Induction >

7. Radioactivity & Particles

7.1 Radioactivity >7.2 Fission and Fusion >

8. Astrophysics

8.1 Motion in the Universe >8.2 Stellar Evolution >8.3 Cosmology >

5.2 Change of State

5.2.1P Explain why heating a system will change the energy stored within the system and raise its temperature or produce changes of state

  • Heating a system will increase the energy in the system
  • Due to heat being a form of energy
  • Heating a system will raise the temperature of the system
  • Once the temperature reaches a certain point the energy will be high enough so that the substance can change state
    • In a solid, particles gain enough energy to overcome the forces of attraction and move over one another, becoming a liquid
    • In a liquid, particles gain enough energy to move away from each other, becoming a gas

5.2.2P Describe the changes that occur when a solid melts to form a liquid, and when a liquid evaporates or boils to form a gas

5.2.3P Describe the arrangement and motion of particles in solids, liquids and gases

5.2.4P Practical: obtain a temperature–time graph to show the constant temperature during a change of state

5.2.5P Know that specific heat capacity is the energy required to change the temperature of an object by one degree Celsius per kilogram of mass (J/kg °C)

5.2.6P Use the equation:

change in thermal energy = mass × specific heat capacity × change in temperature

5.2.7P Practical: investigate the specific heat capacity of materials including water and some solids

Previous5.1 Density and Pressure
Next5.3 Ideal Gas Molecules

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